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  <xs:element id="grdn_AdjustmentsAndReconcilingItems" abstract="false" name="AdjustmentsAndReconcilingItems" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="grdn_NonDeductibleShareBasedCompensationImpact" abstract="false" name="NonDeductibleShareBasedCompensationImpact" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="grdn_DavidMartinMember" abstract="true" name="DavidMartinMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_WillMuddMember" abstract="true" name="WillMuddMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_RichEakinsMember" abstract="true" name="RichEakinsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_RobertWeirMember" abstract="true" name="RobertWeirMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_JohnAckermanThroughCardinalEquityPartnersMember" abstract="true" name="JohnAckermanThroughCardinalEquityPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_JohnAckermanThroughPharmacyInvestorsLLCMember" abstract="true" name="JohnAckermanThroughPharmacyInvestorsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_FredBurkeMember" abstract="true" name="FredBurkeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="grdn_WilliamBindleyAndThomasSalentineJr.ThroughBindleyCapitalPartnersILLCMember" abstract="true" name="WilliamBindleyAndThomasSalentineJr.ThroughBindleyCapitalPartnersILLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
