<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="ProtocolItem" />
  <url value="http://mrdm.nl/profiles/fhir/r4/palga/StructureDefinition/protocol-item" />
  <name value="PalgaProtocolItem" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.id">
      <path value="Observation.id" />
      <definition value="combination of name clinical registry, labid and report number" />
      <min value="1" />
    </element>
    <element id="Observation.extension">
      <path value="Observation.extension" />
      <short value="Version of the protocol" />
      <max value="1" />
    </element>
    <element id="Observation.code.text">
      <path value="Observation.code.text" />
      <short value="Name of the DICA clinical registry" />
      <min value="1" />
    </element>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://logex.com/profiles/fhir/r4/palga/StructureDefinition/patient" />
      </type>
    </element>
    <element id="Observation.performer">
      <path value="Observation.performer" />
      <max value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://logex.com/profiles/fhir/r4/palga/StructureDefinition/organization" />
      </type>
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <min value="1" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Observation.specimen">
      <path value="Observation.specimen" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://logex.com/profiles/fhir/r4/palga/StructureDefinition/specimen" />
      </type>
    </element>
  </differential>
</StructureDefinition>