f:DeviceRequest
extension with URL = 'http://hl7.org/fhir/us/qicore/StructureDefinition/qicore-doNotPerformReason': minimum cardinality of 'extension' is 1
extension with URL = 'http://hl7.org/fhir/us/qicore/StructureDefinition/qicore-doNotPerformReason': maximum cardinality of 'extension' is 1
authoredOn: minimum cardinality of 'authoredOn' is 1
f:DeviceRequest/f:modifierExtension
id: maximum cardinality of 'id' is 1
url: minimum cardinality of 'url' is 1
url: maximum cardinality of 'url' is 1
value[x]: minimum cardinality of 'value[x]' is 1
value[x]: maximum cardinality of 'value[x]' is 1