[1] Kings Coll London, Inst Psychiat Psychol & Neurosci, Dept Psychol Med, London, England
[2] South London & Maudsley Mental Hlth NHS Trust, Biomed Res Nucleus, London, England
[3] Kings Coll London, Biostat & Hlth Informat, London, England
[4] Kings Coll London, Kings Ctr Mil Hlth Res, London, England
[5] Kings Coll London, Sch Populat Hlth & Environm Sci, London, England
[6] Norwegian Inst Publ Hlth, Dept Mental Hlth & Suicide, Oslo, Norway
[7] Nordland Hosp Trust, Norway Ctr Work & Mental Hlth, Bodo, Norway
[8] Directorate Labour & Welf, Norway Res Unit, Oslo, Norway
[9] Haukeland Hosp, Norway Ctr Res & Educ Forens Psychiat & Psychol, Bergen, Norway
[10] Univ Tromso, Dept Community Med, Tromso, Norway
[11] Guys & St Thomas NHS Fdn Trust, Dept Occupat Hlth, London, England