http://hl7.org/fhir/StructureDefinition/Age|4.0.1

{description: 'Base StructureDefinition for Age Type: A duration of time during which an organism (or a process) has existed.', derivation: specialization, name: Age, type: Age, class: complex-type, kind: complex-type, url: 'http://hl7.org/fhir/StructureDefinition/Age', base: 'http://hl7.org/fhir/StructureDefinition/Quantity', version: 4.0.1}