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<?xml version="1.0" encoding="UTF-8"?>
<ItemGroupDef OID="ODM.IG.LB.WBC" Name="WBC Lab Results with Unit" Repeating="No" MethodOID="ODM.MT.LB.LBORRES">
    <!-- The Subject Identifier -->
    <ItemRef ItemOID="ODM.IT.LB.SUBJID" Mandatory="Yes" />
    <!-- Collected Leukocytes (White Blood Count) with units -->
    <!-- The value itself -->
    <!-- Remark the reference to the units item using UnitsItemOID -->
    <ItemRef ItemOID="ODM.IT.LB.WBC.LBORRES" Mandatory="Yes" UnitsItemOID="ODM.IT.LB.WBC.LBORRESU">
        <Origin Type="Collected" Source="Investigator"" />
    <!-- The units for the leukocytes measurement  <Source>-->
    <ItemRef ItemOID="ODM.IT.LB.WBC.LBORRESU"           <SourceItem>
              Mandatory="Yes" />
      <!-- LOINC Thecode valueof itselfthe istest obtainedto from Observation.valueQuantity.valuebe performed -->
    <Coding                <Resource Type="HL7-FHIR" Name="Observation" Attribute="valueQuantity.value"/>
                </SourceItem>
            </Source>
        </Origin>
    </ItemRef>
    <!-- The units for the leukocytes measurement -->
    <ItemRef ItemOID="ODM.IT.LB.WBC.LBORRESU" Mandatory="Yes">
        Code="26464-8" System="http://loinc.org" SystemName="LOINC" SystemVersion="2.92"/>
	<!-- Alternative way of stating the origin of the data in the group, 
		as coming from an Electronic Health Record using the FHIR API, 
		retrieved by the investigator -->
 	<Origin Type="Collected" Source="Investigator">
            <Source>
                	<Source>
			<SourceItem>
            	<!-- The Subject-ID is obtained from   ResearchSubject.identifier -->
				<!-- The ItemOID valuereferences itselfthe isItemDef obtainedproviding from Observation.valueQuantity.unitthe metadata -->
                    <Resource Type="HL7-FHIR" Name="ObservationResearchSubject" Attribute="identifier" ItemOID="valueQuantity.unitODM.IT.LB.SUBJID"/>
                </SourceItem>
		 	<SourceItem>
				<!-- The value itself is obtained from Observation.valueQuantity.value    </Source>
        </Origin>
    </ItemRef>-->
			 	<!-- The ItemOID references the ItemDef providing the metadata -->
    <!-- LOINC code of the test to be performed -->
   <Resource <Coding CodeType="26464HL7-8FHIR" SystemName="http://loinc.orgObservation" SystemNameAttribute="LOINCvalueQuantity.value" SystemVersionItemOID="2.92ODM.IT.LB.WBC.LBORRES"/>
	<!-- Alternative way of stating the origin of the data in the group
		as coming from an Electronic Health Record using the FHIR API, 
		retrieved by the investigator -->
 	<Origin Type="Collected" Source="Investigator">
    	<Source>
			<SourceItem>
            </SourceItem>
            <SourceItem>
				<!-- The Subject-IDvalue itself is obtained from ResearchSubjectObservation.valueQuantity.identifierunit -->
			 	<!-- The ItemOID references the ItemDef providing the metadata -->
                				<Resource Type="HL7-FHIR" Name="ResearchSubjectObservation" Attribute="identifiervalueQuantity.unit" ItemOID="ODM.IT.LB.SUBJIDWBC.LBORRESU"/>
            			</SourceItem>
        </Source>
   </Origin>
</ItemGroupDef>