Lauvsnes Maria B, Greve Ole J, Kvivik Ingeborg, Harboe Erna, Tjensvoll Anne B, Beyer Mona K, Kvaløy Jan T, Gøransson Lasse G, Appenzeller Simone, Omdal Roald
Stavanger University Hospital, Stavanger, Norway.
Oslo University Hospital, Oslo, Norway.
Arthritis Rheumatol. 2015 Jun;67(6):1683-4. doi: 10.1002/art.39076.