STU Update Publication of HL7 FHIR® Implementation Guide: Subscription R5 Backport, Release 1, STU 1.1
Learn more at https://www.hl7.org/implement/standards/product_brief.cfm?product_id=597 or see the specification at http://hl7.org/fhir/uv/subscriptions-backport/STU1.1/