f:Immunization
extension with URL = 'http://jpfhir.jp/fhir/core/Extension/StructureDefinition/JP_Immunization_DueDateOfNextDose': maximum cardinality of 'extension' is 1
extension with URL = 'http://jpfhir.jp/fhir/core/Extension/StructureDefinition/JP_Immunization_ManufacturedDate': maximum cardinality of 'extension' is 1
extension with URL = 'http://jpfhir.jp/fhir/core/Extension/StructureDefinition/JP_Immunization_CertificatedDate': maximum cardinality of 'extension' is 1