Semin Arthritis Rheum 2021 Feb 24;51(1):331-337. Epub 2020 Dec 24.
Rheumatology Division, Department of Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Clinical Epidemiology Division, Departement of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden.