<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="patient-cardinality" />
  <url value="http://example.org/fhir/StructureDefinition/patient-cardinality" />
  <name value="Patientcardinality" />
  <title value="Patient (cardinality)" />
  <status value="draft" />
  <experimental value="true" />
  <description value="This profile illustrates the use of cardinality within a given FHIR resource, as seen with the patient profile here." />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Patient" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Patient" />
  <derivation value="constraint" />
  <differential>
    <element id="Patient.communication">
      <path value="Patient.communication" />
      <min value="1" />
    </element>
  </differential>
</StructureDefinition>