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  <element id="betrf_AdjustmentsForIncreaseDecreaseInRelatedPartyLiabilities" name="AdjustmentsForIncreaseDecreaseInRelatedPartyLiabilities" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ProceedsFromSubscriptionsReceived" name="ProceedsFromSubscriptionsReceived" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ProceedsFromSubscriptionsReceivedByMedmelior" name="ProceedsFromSubscriptionsReceivedByMedmelior" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" name="CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfLoansPayableExplanatory" name="DisclosureOfLoansPayableExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfPromissoryNotesExplanatory" name="DisclosureOfPromissoryNotesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfSharePurchaseWarrantExplanatory" name="DisclosureOfSharePurchaseWarrantExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfCompensationOptionsExplanatory" name="DisclosureOfCompensationOptionsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfManagementOfCapitalExplanatory" name="DisclosureOfManagementOfCapitalExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfAccountingPolicyForBasisOfComplianceExplanatory" name="DescriptionOfAccountingPolicyForBasisOfComplianceExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfAccountingPolicyForBasisOfMeasurementAndPresentationExplanatory" name="DescriptionOfAccountingPolicyForBasisOfMeasurementAndPresentationExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" name="DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfAccountingPolicyForUseOfEstimatesAndJudgmentsExplanatory" name="DescriptionOfAccountingPolicyForUseOfEstimatesAndJudgmentsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfAccountingPolicyForCompoundFinancialInstrumentsExplanatory" name="DescriptionOfAccountingPolicyForCompoundFinancialInstrumentsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfAccountingPolicyForComprehensiveIncomeLossExplanatory" name="DescriptionOfAccountingPolicyForComprehensiveIncomeLossExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutConvertibleDebenturesExplanatory" name="DisclosureOfDetailedInformationAboutConvertibleDebenturesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutPropertyPromissoryNotesExplanatory" name="DisclosureOfDetailedInformationAboutPropertyPromissoryNotesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutConvertibleSecuritiesExplanatory" name="DisclosureOfDetailedInformationAboutConvertibleSecuritiesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutContinuityOfLiabilityClassifiedWarrantExplanatory" name="DisclosureOfDetailedInformationAboutContinuityOfLiabilityClassifiedWarrantExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutLiabilityClassifiedWarrantsWereOutstandingExplanatory" name="DisclosureOfDetailedInformationAboutLiabilityClassifiedWarrantsWereOutstandingExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutAssumptionUsedForFairValuesOfWarrantLiabilitiesExplanatory" name="DisclosureOfDetailedInformationAboutAssumptionUsedForFairValuesOfWarrantLiabilitiesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutContinuityOfLiabilityClassifiedWarrantOfMedmeliorExplanatory" name="DisclosureOfDetailedInformationAboutContinuityOfLiabilityClassifiedWarrantOfMedmeliorExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutAssumptionUsedForFairValuesOfMedMeliorWarrantLiabilitiesExplanatory63" name="DisclosureOfDetailedInformationAboutAssumptionUsedForFairValuesOfMedMeliorWarrantLiabilitiesExplanatory63" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutContinuityOfEquityClassifiedWarrantsExplanatory" name="DisclosureOfDetailedInformationAboutContinuityOfEquityClassifiedWarrantsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutEquityClassifiedWarrantsWereOutstandingExplanatory" name="DisclosureOfDetailedInformationAboutEquityClassifiedWarrantsWereOutstandingExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfOtherEquityClassifiedWarrantsIssuedExplanatory" name="DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfOtherEquityClassifiedWarrantsIssuedExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutCompensationOptionsExplanatory" name="DisclosureOfDetailedInformationAboutCompensationOptionsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutContinuityOfTheCompanySPerformanceStockUnitsPsusExplanatory" name="DisclosureOfDetailedInformationAboutContinuityOfTheCompanySPerformanceStockUnitsPsusExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutPerformanceStockUnitsOutstandingExplanatory" name="DisclosureOfDetailedInformationAboutPerformanceStockUnitsOutstandingExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfShareBasedPaymentExpenseOfPerformanceStockUnits" name="DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfShareBasedPaymentExpenseOfPerformanceStockUnits" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutContinuityOfCompanysSharePurchaseOptionsExplanatory" name="DisclosureOfDetailedInformationAboutContinuityOfCompanysSharePurchaseOptionsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutSharePurchaseOptionsAdditionalInformationExplanatory" name="DisclosureOfDetailedInformationAboutSharePurchaseOptionsAdditionalInformationExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfSharePurchaseOptionsExplanatory" name="DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfSharePurchaseOptionsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutTheContinuityOfMedmeliorSharePurchaseOptionsExplanatory" name="DisclosureOfDetailedInformationAboutTheContinuityOfMedmeliorSharePurchaseOptionsExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfSharePurchaseOptionsOfMedMeliorExplanatory" name="DisclosureOfDetailedInformationAboutAssumptionsUsedForFairValueOfSharePurchaseOptionsOfMedMeliorExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutFinancialInformationExplanatory" name="DisclosureOfDetailedInformationAboutFinancialInformationExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutSupplementalCashFlowDisclosuresExplanatory" name="DisclosureOfDetailedInformationAboutSupplementalCashFlowDisclosuresExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutExpectedIncomeTaxExpenseExplanatory" name="DisclosureOfDetailedInformationAboutExpectedIncomeTaxExpenseExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutComponentsOfDeferredTaxExplanatory" name="DisclosureOfDetailedInformationAboutComponentsOfDeferredTaxExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutComponentsOfDeferredIncomeTaxAssetsAndLiabilitiesExplanatory" name="DisclosureOfDetailedInformationAboutComponentsOfDeferredIncomeTaxAssetsAndLiabilitiesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutNonCapitalLossIncurredAndExpirationDateExplanatory" name="DisclosureOfDetailedInformationAboutNonCapitalLossIncurredAndExpirationDateExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutContinuityOfFinancialGuaranteeLiabilityExplanatory" name="DisclosureOfDetailedInformationAboutContinuityOfFinancialGuaranteeLiabilityExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfDetailedInformationAboutMaturityOfCompanyFinancialLiabilitiesExplanatory" name="DisclosureOfDetailedInformationAboutMaturityOfCompanyFinancialLiabilitiesExplanatory" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CashFlowFromUsedInOperatingActivities" name="CashFlowFromUsedInOperatingActivities" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ProportionOfOwnershipInterestInSubsidiaryPercentage" name="ProportionOfOwnershipInterestInSubsidiaryPercentage" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_Jurisdiction" name="Jurisdiction" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IntangibleAssetsImpairedCarryingValue" name="IntangibleAssetsImpairedCarryingValue" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_BeginningBalance" name="BeginningBalance" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_TransferOfConversionComponentToEquity" name="TransferOfConversionComponentToEquity" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_TransactionCosts" name="TransactionCosts" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AccretionAndInterest" name="AccretionAndInterest" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_InterestPayments" name="InterestPayments" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ConversionStock" name="ConversionStock" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_EndingBalance" name="EndingBalance" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DebtInstrumentsHeldAmount" name="DebtInstrumentsHeldAmount" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ProceedsFromConvertibleDebentures" name="ProceedsFromConvertibleDebentures" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_InterestExpenseIncomeNetDefinedBenefitLiabilitieAsset" name="InterestExpenseIncomeNetDefinedBenefitLiabilitieAsset" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_TransactionCost" name="TransactionCost" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AccruedInterest" name="AccruedInterest" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PrincipalAmountConvertedIntoCommonShares" name="PrincipalAmountConvertedIntoCommonShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PrincipalAmountConvertedIntoCommonSharesToPurchaseWarrants" name="PrincipalAmountConvertedIntoCommonSharesToPurchaseWarrants" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PrincipalAmountCarryingValueOfConvertibleDebentures" name="PrincipalAmountCarryingValueOfConvertibleDebentures" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PrincipalAmount" name="PrincipalAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ConvertibleDebentureAccruedInterest" name="ConvertibleDebentureAccruedInterest" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantsFairValue" name="WarrantsFairValue" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_Warrants" name="Warrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_BrokersFee" name="BrokersFee" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DebentureInterestRate" name="DebentureInterestRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_EffectiveInterestRate" name="EffectiveInterestRate" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DebtMaturityDate" name="DebtMaturityDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantsMaturityDate" name="WarrantsMaturityDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ConversionPricePerShare" name="ConversionPricePerShare" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantsExercisePrice" name="WarrantsExercisePrice" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CurrentNonCurrentLoansPayableAbstract" name="CurrentNonCurrentLoansPayableAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoansPayableBeginningBalance" name="LoansPayableBeginningBalance" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoanExtinguishment" name="LoanExtinguishment" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_InterestPaymentPayable" name="InterestPaymentPayable" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PrincipalPayment" name="PrincipalPayment" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AccretionAndInterestPayable" name="AccretionAndInterestPayable" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoansPayableEndingBalance" name="LoansPayableEndingBalance" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoansPayablesInDefault" name="LoansPayablesInDefault" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_GainsLossesOnExtinguishmentOfFinancialLiabilities" name="GainsLossesOnExtinguishmentOfFinancialLiabilities" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_RepaymentOfDebt" name="RepaymentOfDebt" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoanAgreementTermAmount" name="LoanAgreementTermAmount" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_InitialLoanAgreementsDescription" name="InitialLoanAgreementsDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AccretionExpense" name="AccretionExpense" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoanPayableInterestRate" name="LoanPayableInterestRate" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_InterestRate" name="InterestRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AllocatedToCommonShare" name="AllocatedToCommonShare" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AllocatedToWarrant" name="AllocatedToWarrant" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfCommonShareIssued" name="NumberOfCommonShareIssued" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfWarrantIssuedDuringPeriod" name="NumberOfWarrantIssuedDuringPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AllocatedCommonShareIssued" name="AllocatedCommonShareIssued" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_OtherTransactionsCosts" name="OtherTransactionsCosts" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SubscriptionProceeds" name="SubscriptionProceeds" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesPricePerShares" name="CommonSharesPricePerShares" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ProceedsFromSharePurchaseWarrants" name="ProceedsFromSharePurchaseWarrants" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_FairValuesOfWarrantsIssued" name="FairValuesOfWarrantsIssued" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_FairValueOfWarrantIssued" name="FairValueOfWarrantIssued" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AmountsDueToRelatedParties" name="AmountsDueToRelatedParties" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_GainsFromExtinguishmentForgivenessOfDebts" name="GainsFromExtinguishmentForgivenessOfDebts" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ReceivedSubscriptionProceeds" name="ReceivedSubscriptionProceeds" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExercisePrice" name="ExercisePrice" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfWarrants" name="DescriptionOfWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IssuanceOfSharePurchaseWarrants" name="IssuanceOfSharePurchaseWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IssuanceOfSharePurchaseWarrantsValue" name="IssuanceOfSharePurchaseWarrantsValue" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesIssuanceExpiryDate" name="CommonSharesIssuanceExpiryDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesIssuanceCostOfFairValue" name="CommonSharesIssuanceCostOfFairValue" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesIssuanceCancelled" name="CommonSharesIssuanceCancelled" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantsOutstandingBeginningBalance" name="WarrantsOutstandingBeginningBalance" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfWarrantsGranted" name="NumberOfWarrantsGranted" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantsOutstandingEndingBalance" name="WarrantsOutstandingEndingBalance" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceBeginningBalance" name="WeightedAverageExercisePriceBeginningBalance" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceChangeInFairValue" name="WeightedAverageExercisePriceChangeInFairValue" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceGranted" name="WeightedAverageExercisePriceGranted" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceEndingBalance" name="WeightedAverageExercisePriceEndingBalance" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeBeginningBalance" name="WeightedAverageRemainingContractualLifeBeginningBalance" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeGranted" name="WeightedAverageRemainingContractualLifeGranted" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeEndingBalance" name="WeightedAverageRemainingContractualLifeEndingBalance" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LiabilityAmountBeginningBalance" name="LiabilityAmountBeginningBalance" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LiabilityAmountGranted" name="LiabilityAmountGranted" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LiabilityAmountChangeInFairValue" name="LiabilityAmountChangeInFairValue" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LiabilityAmountEndingBalance" name="LiabilityAmountEndingBalance" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfWarrants" name="NumberOfWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExercisePricePerShares" name="ExercisePricePerShares" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExpireDate" name="ExpireDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesRiskFreeInterestRates" name="WarrantLiabilitiesRiskFreeInterestRates" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesRatesVolatilities" name="WarrantLiabilitiesRatesVolatilities" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesFairValuesOfCommonShares" name="WarrantLiabilitiesFairValuesOfCommonShares" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesExpectedDividend" name="WarrantLiabilitiesExpectedDividend" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesExpectedLives" name="WarrantLiabilitiesExpectedLives" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesExercisePrices" name="WarrantLiabilitiesExercisePrices" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilitiesFairValuesOfWarrants" name="WarrantLiabilitiesFairValuesOfWarrants" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfEquityInstrumentsGranted" name="NumberOfEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfWarrantsExpire" name="NumberOfWarrantsExpire" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceGrantedPursuantToAcquisition" name="WeightedAverageExercisePriceGrantedPursuantToAcquisition" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceExpire" name="WeightedAverageExercisePriceExpire" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LiabilityAmountGrantedPursuantToAcquisition" name="LiabilityAmountGrantedPursuantToAcquisition" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_MarketPricesOfCommonPerShares" name="MarketPricesOfCommonPerShares" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExpectedLives" name="ExpectedLives" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExercisePriceShareOption" name="ExercisePriceShareOption" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_FairValuesOfWarrantsPerShare" name="FairValuesOfWarrantsPerShare" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfEquityInstrumentsExpiredInSharebasedPaymentArrangement" name="NumberOfEquityInstrumentsExpiredInSharebasedPaymentArrangement" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfEquityInstrumentsExercisedInSharebasedPaymentArrangement" name="NumberOfEquityInstrumentsExercisedInSharebasedPaymentArrangement" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceExpired" name="WeightedAverageExercisePriceExpired" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceExercised" name="WeightedAverageExercisePriceExercised" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExercisePriceOfOutstandingShareOptions" name="ExercisePriceOfOutstandingShareOptions" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExpiryDateOfWarrantsOutstanding" name="ExpiryDateOfWarrantsOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DatesOfGrantDescription" name="DatesOfGrantDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_GrantedPursuantToAcquisition" name="GrantedPursuantToAcquisition" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfSharePurchaseWarrants" name="NumberOfSharePurchaseWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CompensationOptionsOutstandingBeginning" name="CompensationOptionsOutstandingBeginning" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CompensationOptionsExpired" name="CompensationOptionsExpired" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CompensationOptionsOutstandingEnding" name="CompensationOptionsOutstandingEnding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceCompensationOptionsBeginning" name="WeightedAverageExercisePriceCompensationOptionsBeginning" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceCompensationOptionsExpired" name="WeightedAverageExercisePriceCompensationOptionsExpired" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceCompensationOptionsEnding" name="WeightedAverageExercisePriceCompensationOptionsEnding" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeYearsBeginning" name="WeightedAverageRemainingContractualLifeYearsBeginning" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitsOutstanding" name="PerformanceStockUnitsOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitsGranted" name="PerformanceStockUnitsGranted" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitsForfeited" name="PerformanceStockUnitsForfeited" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitsOutstandingEnding" name="PerformanceStockUnitsOutstandingEnding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitsVolumeWeightedAverageCommonShares" name="PerformanceStockUnitsVolumeWeightedAverageCommonShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitsVested" name="PerformanceStockUnitsVested" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AggregatePerformanceStockUnitsVestingProvisions" name="AggregatePerformanceStockUnitsVestingProvisions" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DescriptionOfVolumeWeightedAverageCommonSharePrice" name="DescriptionOfVolumeWeightedAverageCommonSharePrice" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DatesOfGrantOrValuation" name="DatesOfGrantOrValuation" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentExpenseFairValueAssumptionsRiskFreeInterestRate" name="ShareBasedCompensationArrangementByShareBasedPaymentExpenseFairValueAssumptionsRiskFreeInterestRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" name="ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMarketPricesOfCommonSharesOnGrantDate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMarketPricesOfCommonSharesOnGrantDate" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" name="ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SharebasedCompensationBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm" name="SharebasedCompensationBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementbBySharebasedPaymentAwardPerformanceStockUnitsOnGrantOrValuationDates" name="ShareBasedCompensationArrangementbBySharebasedPaymentAwardPerformanceStockUnitsOnGrantOrValuationDates" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfOptionsOutstandingBeginning" name="NumberOfOptionsOutstandingBeginning" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfOptionsGranted" name="NumberOfOptionsGranted" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfOptionsForfeitedExpired" name="NumberOfOptionsForfeitedExpired" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfOptionsOutstandingEnding" name="NumberOfOptionsOutstandingEnding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceOutstandingBeginnig" name="WeightedAverageExercisePriceOutstandingBeginnig" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement" name="WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement" name="WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceOutstandingEnding" name="WeightedAverageExercisePriceOutstandingEnding" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeOutstandingBeginning" name="WeightedAverageRemainingContractualLifeOutstandingBeginning" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeOutstandingEnding" name="WeightedAverageRemainingContractualLifeOutstandingEnding" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfOptionsOutstanding" name="NumberOfOptionsOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_OptionsExercisable" name="OptionsExercisable" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_VestingTerms" name="VestingTerms" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExpiryDate" name="ExpiryDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentExpenseFairValueAssumptionsRiskFreeInterestRateMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentExpenseFairValueAssumptionsRiskFreeInterestRateMinimum" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentFairValueAssumptionsRiskFreeInterestRateMaximum" name="ShareBasedCompensationArrangementByShareBasedPaymentFairValueAssumptionsRiskFreeInterestRateMaximum" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum" name="ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum" name="ShareBasedCompensationByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMarketPricesOfCommonSharesOnGrantDateMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMarketPricesOfCommonSharesOnGrantDateMinimum" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMarketPricesOfCommonSharesOnGrantDateMaximum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMarketPricesOfCommonSharesOnGrantDateMaximum" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SharebasedCompensationBySharebasedPaymentAwardFairValueAssumptionsExpectedTermMinimum" name="SharebasedCompensationBySharebasedPaymentAwardFairValueAssumptionsExpectedTermMinimum" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SharebasedCompensationBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" name="SharebasedCompensationBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePriceMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePriceMinimum" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePriceMaximum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePriceMaximum" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementbBySharebasedPaymentAwardFairValuesOfOptionsOnGrantOrValuationDates" name="ShareBasedCompensationArrangementbBySharebasedPaymentAwardFairValuesOfOptionsOnGrantOrValuationDates" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementbBySharebasedPaymentAwardFairValuesOfOptionsOnGrantOrValuationDatesMinimum" name="ShareBasedCompensationArrangementbBySharebasedPaymentAwardFairValuesOfOptionsOnGrantOrValuationDatesMinimum" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedCompensationArrangementbBySharebasedPaymentAwardFairValuesOfOptionsOnGrantOrValuationDatesMaximum" name="ShareBasedCompensationArrangementbBySharebasedPaymentAwardFairValuesOfOptionsOnGrantOrValuationDatesMaximum" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfOptionsExpired" name="NumberOfOptionsExpired" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceOutstandingBeginning" name="WeightedAverageExercisePriceOutstandingBeginning" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement" name="WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WeightedAverageRemainingContractualLifeOutstandingBegginning" name="WeightedAverageRemainingContractualLifeOutstandingBegginning" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedPaymentsRelatedToSharePurchaseOptions" name="ShareBasedPaymentsRelatedToSharePurchaseOptions" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ShareBasedPaymentsRelatedToPerformanceStockUnits" name="ShareBasedPaymentsRelatedToPerformanceStockUnits" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PerformanceStockUnitOutstanding" name="PerformanceStockUnitOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_UnrecognizedSharesBasedPaymentExpenses" name="UnrecognizedSharesBasedPaymentExpenses" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NetLiabilitiesAttributableToNci" name="NetLiabilitiesAttributableToNci" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DividendsPaidToNciDuringTheYear" name="DividendsPaidToNciDuringTheYear" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_OwnershipInterestRate" name="OwnershipInterestRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfCommonStockSharesIssuedDuringPeriod" name="NumberOfCommonStockSharesIssuedDuringPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SharePurchaseWarrants" name="SharePurchaseWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SettlementOfOutstandingCompensationAmount" name="SettlementOfOutstandingCompensationAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SupplementalDisclosuresAbstract" name="SupplementalDisclosuresAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_InterestPaid" name="InterestPaid" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NonCashInvestingAndFinancingActivitiesAbstract" name="NonCashInvestingAndFinancingActivitiesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesIssuedForSettlementOfAmountsDueToRelatedPartiesAndAccountsPayable" name="CommonSharesIssuedForSettlementOfAmountsDueToRelatedPartiesAndAccountsPayable" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesIssuedForSettlementOfDueToRelatedParties" name="CommonSharesIssuedForSettlementOfDueToRelatedParties" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_BrokersWarrantsGrantedAsIssueCostsForConvertibleDebentures" name="BrokersWarrantsGrantedAsIssueCostsForConvertibleDebentures" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesAndSharePurchaseWarrantsIssuedForConversionOfDebenturesAndAccruedInterest" name="CommonSharesAndSharePurchaseWarrantsIssuedForConversionOfDebenturesAndAccruedInterest" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantsIssuedForFinderSFee" name="WarrantsIssuedForFinderSFee" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StockOptionsGrantedInSharebasedPaymentArrangement" name="StockOptionsGrantedInSharebasedPaymentArrangement" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StockOptionExpired" name="StockOptionExpired" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_GainsLossesOnForgivenessOfDebts" name="GainsLossesOnForgivenessOfDebts" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SettlementAndLegalProvisionsExpense" name="SettlementAndLegalProvisionsExpense" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesIssuedVested" name="CommonSharesIssuedVested" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DateOfMaturity" name="DateOfMaturity" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_EffectOfConvertibleInstrumentsOnNumberOfCommonShares" name="EffectOfConvertibleInstrumentsOnNumberOfCommonShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PsuOptionsGrantedDuringTheYear" name="PsuOptionsGrantedDuringTheYear" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NetLossBeforeTaxes" name="NetLossBeforeTaxes" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StatutoryRate" name="StatutoryRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ExpectedTaxRecovery" name="ExpectedTaxRecovery" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PermanentDifferencesAndOther" name="PermanentDifferencesAndOther" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AllocatedShareBasedPayments" name="AllocatedShareBasedPayments" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IncomeTaxExpense" name="IncomeTaxExpense" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_FinancingFees" name="FinancingFees" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ConvertibleDebentures" name="ConvertibleDebentures" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NetDeferredTaxAssetLiability" name="NetDeferredTaxAssetLiability" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IntangibleAssets" name="IntangibleAssets" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PropertyAndEquipmentOther" name="PropertyAndEquipmentOther" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ContingentLiability" name="ContingentLiability" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_FinancingCosts" name="FinancingCosts" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CapitalLoss" name="CapitalLoss" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NonCapitalLossCarryforwards" name="NonCapitalLossCarryforwards" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StatutoryRates" name="StatutoryRates" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ChangeInCarryingValue" name="ChangeInCarryingValue" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ContractAmount" name="ContractAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AmountPaidByCompany" name="AmountPaidByCompany" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_AmountPaidFuture" name="AmountPaidFuture" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IssuanceOfStockOptions" name="IssuanceOfStockOptions" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ClaimAmountTerminationOfEmployment" name="ClaimAmountTerminationOfEmployment" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NonBrokeredPrivatePlacements" name="NonBrokeredPrivatePlacements" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SettlementsOfLegalClaims" name="SettlementsOfLegalClaims" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_MonthlyLeasePayment" name="MonthlyLeasePayment" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PunitiveDamagesCharges" name="PunitiveDamagesCharges" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_OutstandingLease" name="OutstandingLease" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CurrentAccruedExpensesAndOtherCurrentLiabilitiesAmount" name="CurrentAccruedExpensesAndOtherCurrentLiabilitiesAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_FinancialGuaranteeLiability" name="FinancialGuaranteeLiability" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_LoansPayableInDefaultAmount" name="LoansPayableInDefaultAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_PromissoryNotesInDefault" name="PromissoryNotesInDefault" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantLiabilities" name="WarrantLiabilities" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CurrencyRiskDescription" name="CurrencyRiskDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StockOptionsGranted" name="StockOptionsGranted" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfWarrantsIssued" name="NumberOfWarrantsIssued" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_NumberOfWarrantIssued" name="NumberOfWarrantIssued" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ConvertibleDebtMaturityDate" name="ConvertibleDebtMaturityDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesRelatedToServices" name="CommonSharesRelatedToServices" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesRelatedToServicesValue" name="CommonSharesRelatedToServicesValue" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_WarrantExercisePrice" name="WarrantExercisePrice" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ConvertibleDebenturesExpiryDatesofwarrants" name="ConvertibleDebenturesExpiryDatesofwarrants" nillable="true" xbrli:periodType="instant" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
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  <element id="betrf_DisclosureOfChangesInAccountingPoliciesExplanatoryAbstract" name="DisclosureOfChangesInAccountingPoliciesExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatoryAbstract" name="DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_IntangibleAssetsExplanatoryAbstract" name="IntangibleAssetsExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfConvertibleDebenturesAbstract" name="DisclosureOfConvertibleDebenturesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DebtInstrumentAndLoansPayablesAbstract" name="DebtInstrumentAndLoansPayablesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfPromissoryNoteExplanatoryAbstract" name="DisclosureOfPromissoryNoteExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommonSharesAbstract" name="CommonSharesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_SharePurchaseWarrantsAbstract" name="SharePurchaseWarrantsAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatoryAbstract" name="DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfInsuranceContractsExplanatoryAbstract" name="DisclosureOfInsuranceContractsExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
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  <element id="betrf_SupplementalCashFlowDisclosuresAbstract" name="SupplementalCashFlowDisclosuresAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfRelatedPartyExplanatoryAbstract" name="DisclosureOfRelatedPartyExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfIncomeTaxExplanatoryAbstract" name="DisclosureOfIncomeTaxExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_CommitmentsAndContingenciesAbstract" name="CommitmentsAndContingenciesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfOperatingSegmentsExplanatoryAbstract" name="DisclosureOfOperatingSegmentsExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_DisclosureOfFairValueMeasurementExplanatoryAbstract" name="DisclosureOfFairValueMeasurementExplanatoryAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ManagementOfFinancialRiskAbstract" name="ManagementOfFinancialRiskAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_ManagementOfCapitalAbstract" name="ManagementOfCapitalAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StatementTable" name="StatementTable" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="betrf_StatementLineItems" name="StatementLineItems" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="CommonStockMember" id="betrf_CommonStockMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="CommonSharesIssuableMember" id="betrf_CommonSharesIssuableMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ReservesMember" id="betrf_ReservesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TotalShareholdersDeficitMember" id="betrf_TotalShareholdersDeficitMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="NoncontrollingInterestMember" id="betrf_NoncontrollingInterestMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="DecemberThirtyOneTwoZeroTwoThreeMember" id="betrf_DecemberThirtyOneTwoZeroTwoThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AprilThirtyTwoZeroTwoFourMember" id="betrf_AprilThirtyTwoZeroTwoFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="MarchTwentyEightTwoZeroTwoFourMember" id="betrf_MarchTwentyEightTwoZeroTwoFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="FebruaryTwentyNineTwoZeroTwoFourMember" id="betrf_FebruaryTwentyNineTwoZeroTwoFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionOneMember" id="betrf_TransactionOneMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionTwoMember" id="betrf_TransactionTwoMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="NonadjustingsEventsMember" id="betrf_NonadjustingsEventsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="DirectorsOfficersAnEmployeeAndAnAdvisoryMember" id="betrf_DirectorsOfficersAnEmployeeAndAnAdvisoryMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ConvertibleDebenturesNoteFiveCMember" id="betrf_ConvertibleDebenturesNoteFiveCMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ConvertibleDebenturesNoteFiveDMember" id="betrf_ConvertibleDebenturesNoteFiveDMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ConvertibleDebenturesFebruaryMember" id="betrf_ConvertibleDebenturesFebruaryMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ConvertibleDebenturesMarchMember" id="betrf_ConvertibleDebenturesMarchMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AdvisoryMember" id="betrf_AdvisoryMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="NonBrokeredPrivatePlacementMember" id="betrf_NonBrokeredPrivatePlacementMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ConvertibleDebentureMember" id="betrf_ConvertibleDebentureMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="BlifeTherapeuticsIncMember" id="betrf_BlifeTherapeuticsIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="BetterLifePharmaUSIncMember" id="betrf_BetterLifePharmaUSIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="MedMeliorIncMember" id="betrf_MedMeliorIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="BetterLifePharmaIncMember" id="betrf_BetterLifePharmaIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AltumPharmaAustraliaPtyLtdMember" id="betrf_AltumPharmaAustraliaPtyLtdMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AltumPharmaceuticalsHKLimitedMember" id="betrf_AltumPharmaceuticalsHKLimitedMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="BetterLifeLoanMember" id="betrf_BetterLifeLoanMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="MedMeliorLoanMember" id="betrf_MedMeliorLoanMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="CanadaEmergencyBusinessAccountMember" id="betrf_CanadaEmergencyBusinessAccountMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ThroughSeptember2027Member" id="betrf_ThroughSeptember2027Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="EquityClassifiedWarrantMember" id="betrf_EquityClassifiedWarrantMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="MiniimumMember" id="betrf_MiniimumMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFourtFiveMember" id="betrf_TwoThousandFourtFiveMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ChiefExecutiveOfficersMember" id="betrf_ChiefExecutiveOfficersMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="DecemberTwoThousandTwentyThreeMember" id="betrf_DecemberTwoThousandTwentyThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AugustTwoThousandTwentyThreeMember" id="betrf_AugustTwoThousandTwentyThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="JuneTwoThousandTwentyFourMember" id="betrf_JuneTwoThousandTwentyFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="MarchTwoThousandTwentyFourMember" id="betrf_MarchTwoThousandTwentyFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ThroughOctober152027Member" id="betrf_ThroughOctober152027Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFortySixMember" id="betrf_TwoThousandFortySixMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="PromissoryNoteTwoMember" id="betrf_PromissoryNoteTwoMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="LevelTwoOfFairValueHierarchyMember" id="betrf_LevelTwoOfFairValueHierarchyMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="LevelThreeOfFairValueHierarchyMember" id="betrf_LevelThreeOfFairValueHierarchyMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="LevelOneOfFairValueHierarchyMember" id="betrf_LevelOneOfFairValueHierarchyMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionsCostsMember" id="betrf_TransactionsCostsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="PromissoryNoteOneMember" id="betrf_PromissoryNoteOneMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="WarrantsOfMedMeliorMember" id="betrf_WarrantsOfMedMeliorMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionThreeMember" id="betrf_TransactionThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionFourMember" id="betrf_TransactionFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionFiveMember" id="betrf_TransactionFiveMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionSixMember" id="betrf_TransactionSixMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionSevenMember" id="betrf_TransactionSevenMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionEightMember" id="betrf_TransactionEightMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionNineMember" id="betrf_TransactionNineMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionTenMember" id="betrf_TransactionTenMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionElevenMember" id="betrf_TransactionElevenMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TransactionTwelveMember" id="betrf_TransactionTwelveMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="BlackScholesOptionPricingModelMember" id="betrf_BlackScholesOptionPricingModelMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AprilTwoTwoZeroTwoFourMember" id="betrf_AprilTwoTwoZeroTwoFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="PrivatePlacementsMember" id="betrf_PrivatePlacementsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="PerformanceStockUnitsMember" id="betrf_PerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="SharePurchaseOptionsMember" id="betrf_SharePurchaseOptionsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
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  <element name="OptionsTwoMember" id="betrf_OptionsTwoMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OptionsThreeMember" id="betrf_OptionsThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OptionsFourMember" id="betrf_OptionsFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OptionsFiveMember" id="betrf_OptionsFiveMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OptionsSixMember" id="betrf_OptionsSixMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="MedMeliorMember" id="betrf_MedMeliorMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ShelfProspectusMember" id="betrf_ShelfProspectusMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="EquityClassifiedWarrantsMember" id="betrf_EquityClassifiedWarrantsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
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  <element name="KeyManagementAndDirectorMember" id="betrf_KeyManagementAndDirectorMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="DirectorAndOfficersMember" id="betrf_DirectorAndOfficersMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="DirectorsOfficersAndFormerOfficerMember" id="betrf_DirectorsOfficersAndFormerOfficerMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="RelatedPartiesMedMeliorMember" id="betrf_RelatedPartiesMedMeliorMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="HongKongMember" id="betrf_HongKongMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="CDAMember" id="betrf_CDAMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="CompensationOptionsMember" id="betrf_CompensationOptionsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="AustraliaMember" id="betrf_AustraliaMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtyTwoMember" id="betrf_TwoThousandThirtyTwoMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtyFourMember" id="betrf_TwoThousandThirtyFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtyFiveMember" id="betrf_TwoThousandThirtyFiveMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtySixMember" id="betrf_TwoThousandThirtySixMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtySevenMember" id="betrf_TwoThousandThirtySevenMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtyEightMember" id="betrf_TwoThousandThirtyEightMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandThirtyNineMember" id="betrf_TwoThousandThirtyNineMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFourtyMember" id="betrf_TwoThousandFourtyMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFourtOneMember" id="betrf_TwoThousandFourtOneMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFourtTwoMember" id="betrf_TwoThousandFourtTwoMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFourtThreeMember" id="betrf_TwoThousandFourtThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="TwoThousandFourtFourMember" id="betrf_TwoThousandFourtFourMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OlymbecDevelopmentIncMember" id="betrf_OlymbecDevelopmentIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="GSBMember" id="betrf_GSBMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OverTwelveMonthsMember" id="betrf_OverTwelveMonthsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="ZeroToTwelveMonthsMember" id="betrf_ZeroToTwelveMonthsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OfficersAndDirectorMember" id="betrf_OfficersAndDirectorMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="PerformanceStockUnitsOneMember" id="betrf_PerformanceStockUnitsOneMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element name="OfficersAndDirectorsMember" id="betrf_OfficersAndDirectorsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
