<ResearchSubject xmlns="http://hl7.org/fhir">
    <id value="researchsubject-soa-1" />
    <meta>
        <profile value="http://clinicalsite.org/fhir/StructureDefinition/researchsubject-soa" />
    </meta>
    <extension url="http://clinicalsite.org/fhir/StructureDefinition/researchsubject-status-history">
        <extension url="status">
            <valueCode value="potential-candidate" />
        </extension>
        <extension url="period">
            <valuePeriod>
                <start value="2017-12-01" />
            </valuePeriod>
        </extension>
    </extension>
    <identifier>
        <type>
            <coding>
                <system value="http://clinicalsite.org/fhir/CodeSystem/researchsubject-identifier-type" />
                <code value="SCREEN" />
            </coding>
        </type>
        <system value="http://clinicalsite.org/fhir/NamingSystem/[sponsor-id]/screening-identifier" />
        <value value="1973" />
    </identifier>
    <!-- 
	<identifier>
		<type>
			<system value="http://clinicalsite.org/fhir/CodeSystem/researchsubject-identifier-type" />
			<code value="SUBJ" />
		</type>
		<system value="http://clinicalsite.org/fhir/NamingSystem/[sponsor-id]/researchsubject-identifier"/>
		<value value="5467"/>
	</identifier>
	 -->
    <status value="candidate" />
    <period>
        <start value="2017-12-01" />
    </period>
    <study>
        <reference value="ResearchStudy/researchstudy-soa-1" />
    </study>
    <individual>
        <reference value="Patient/patient-soa-1" />
    </individual>
</ResearchSubject>