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FHIR Questionnaire profile https://docs.ehealth.sundhed.dk/latest-released/igfhir/StructureDefinition-ehealth-questionnaire.html and https://docs.ehealth.sundhed.dk/latest-released/igfhir/StructureDefinition-ehealth-questionnaire-advanced.html
FHIR QuestionnaireResponse profile https://docs.ehealth.sundhed.dk/latest-released/igfhir/StructureDefinition-ehealth-questionnaireresponse.html
There are external representations in the form of documents with a somewhat similar division between questionnaire and response:
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