{
  "resourceType": "StructureDefinition",
  "url": "https://example.org/fhir/StructureDefinition/PH_Period",
  "name": "PH_Period",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "type": "Period",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Period",
  "derivation": "constraint"
}