Extensions for Using Data Elements from FHIR R5 in FHIR R4 - Downloaded Version null See the Directory of published versions
http://hl7.org/fhir/ValueSet/message-events for use in FHIR R4The FHIR R5 ValueSet MessageEvent maps to the FHIR R4 ValueSet MessageEvent:http://hl7.org/fhir/ValueSet/message-events
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