Unballoted STU Update Publication of HL7 FHIR® Implementation Guide: Healthcare Associated Infection Reports, Release 1, STU 2.1 —US Realm
Learn more at https://www.hl7.org/implement/standards/product_brief.cfm?product_id=485 or see the specification at http://hl7.org/fhir/us/hai/STU2.1