<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://limics.fr/fhir/ehr2edc/StructureDefinition/Observation.ehr2edc" />
  <name value="Observation.ehr2edc" />
  <status value="draft" />
  <fhirVersion value="3.0.1" />
  <kind value="resource" />
  <abstract value="true" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.id">
      <path value="Observation.id" />
      <min value="1" />
    </element>
    <element id="Observation.category">
      <path value="Observation.category" />
      <min value="1" />
      <max value="1" />
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="ObservationCategory" />
        </extension>
        <strength value="required" />
        <valueSetReference>
          <reference value="http://limics.fr/fhir/ehr2edc/ValueSet/observation-category.ehr2edc" />
        </valueSetReference>
      </binding>
    </element>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <min value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://limics.fr/fhir/ehr2edc/StructureDefinition/Patient.ehr2edc" />
      </type>
    </element>
    <element id="Observation.subject.reference">
      <path value="Observation.subject.reference" />
      <max value="0" />
    </element>
    <element id="Observation.subject.identifier">
      <path value="Observation.subject.identifier" />
      <min value="1" />
    </element>
    <element id="Observation.subject.display">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true" />
      </extension>
      <path value="Observation.subject.display" />
      <max value="0" />
    </element>
    <element id="Observation.effective[x]">
      <path value="Observation.effective[x]" />
      <min value="1" />
    </element>
  </differential>
</StructureDefinition>