Activitydefinition with participant
 <subtitle value="voor GGZ Testland"/> <status value="active"/> <date value="2025-04-11T09:30:52+00:00"/> <description value="Vragenlijst ROM"/> <topic> <coding> <system value="http://vzvz.nl/fhir/CodeSystem/koppeltaal-definition-topic"/> <code value="self-assessment"/> </coding> </topic> <participant> <type value="related-person"/> <role> <coding> <system value="http://terminology.hl7.org/CodeSystem/v3-RoleCode"/> <code value="AUNT"/> </coding> </role> </participant> <participant> <type value="practitioner"/> <role> <coding> <system value="http://snomed.info/sct"/> <code value="224588003"/> <display value="Psychotherapist"/> </coding> </role> </participant> </ActivityDefinition>