Michelsen Brigitte, Kvien Tore K
Department of Rheumatology, Diakonhjemmet Hospital, Oslo, Norway.
Department of Rheumatology, Hospital of Southern Norway Trust, Kristiansand, Norway.
Ann Rheum Dis. 2019 Jan;78(1):e2. doi: 10.1136/annrheumdis-2017-212910. Epub 2018 Jan 22.