[1] Danish Hosp Rheumat Dis, Res Unit, Sonderborg, Denmark
[2] Univ Southern Denmark, Dept Reg Hlth Res, Odense, Denmark
[3] Sano Middelfart, Sano Denmark, Middelfart, Denmark
[4] Univ Hosp Southern Denmark, Hosp Southern Jutland, Aabenraa, Denmark
[5] Lund Univ, Sect Rheumatol, Dept Clin Sci Lund, Lund, Sweden
[6] Spenshult Res & Dev Ctr, Spenshult, Halmstad, Sweden