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

Base StructureDefinition for Age Type: A duration of time during which an organism (or a process) has existed.

element_id	types
Age
Age
Age.id	http://hl7.org/fhirpath/System.String
Age.extension	Extension
Age.value	decimal
Age.comparator	code
Age.unit	string
Age.system	uri
Age.code	code