<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://acme.org/fhir/StructureDefinition/ACME-NlcoreVaccinationevent" />
  <name value="ACMENlcoreVaccinationevent" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Immunization" />
  <baseDefinition value="http://nictiz.nl/fhir/StructureDefinition/nl-core-Vaccination-event" />
  <derivation value="constraint" />
  <differential>
    <element id="Immunization.identifier">
      <path value="Immunization.identifier" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Immunization.identifier.system">
      <path value="Immunization.identifier.system" />
      <min value="1" />
    </element>
    <element id="Immunization.patient">
      <path value="Immunization.patient" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://acme/fhir/StructureDefinition/Patient" />
      </type>
    </element>
    <element id="Immunization.doseQuantity">
      <path value="Immunization.doseQuantity" />
      <min value="1" />
    </element>
    <element id="Immunization.reasonCode">
      <path value="Immunization.reasonCode" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>