[1] Finnish Inst Occupat Hlth, Work Disabil Prevent, Helsinki, Finland
[2] Univ Helsinki, Dept Publ Hlth, Helsinki, Finland
[3] Univ Turku, Dept Publ Hlth, Turku, Finland
[4] Univ Copenhagen, Sect Social Med, Dept Publ Hlth, Copenhagen, Denmark
[5] Univ Copenhagen, Copenhagen Stress Res Ctr, Copenhagen, Denmark
[6] Univ Turku, Dept Psychol, Turku, Finland
[7] UCL, Dept Epidemiol & Publ Hlth, London, England
[8] Univ Helsinki, Clinicum, Fac Med, Helsinki, Finland
[9] Turku Univ Hosp, Turku, Finland