http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl|4.0.1
The type of data entry control or structure that should be used to render the item.
Type: Extension (a.k.a: http://hl7.org/fhir/StructureDefinition/Extension)
Type dependencies: 2
Elements
extension: Extension
value[x]: CodeableConcept