http://hl7.org/fhir/StructureDefinition/allergyintolerance-resolutionAge|4.0.1

The estimated patient age at which the allergy or intolerance resolved. Should be specified only if the status is resolved.

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	Age
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	Age