<status value="draft"/> <experimental value="false"/> <date value="2021-01-17T07:06:13+11:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <description value="Possible group measure aggregates (E.g. Mean, Median)."/> <immutable value="true"/> <compose> <include> <system value="http://hl7.org/fhir/group-measure"/> </include> </compose> </ValueSet>