[1] Karolinska Univ Hosp, Karolinska Inst, Inst Environm Med, SE-17177 Stockholm, Sweden
[2] Karolinska Univ Hosp, Karolinska Inst, Dept Publ Hlth Sci, Div Psychosocial Factors & Hlth, SE-17177 Stockholm, Sweden
[3] Karolinska Univ Hosp, Karolinska Inst, Dept Med, Rheumatol Unit, SE-17177 Stockholm, Sweden
[4] Karolinska Univ Hosp, Stockholm Ctr Publ Hlth, SE-17177 Stockholm, Sweden