[1] Nordland Psychiat Hosp, Bodo, Norway
[2] Umea Univ, Div Psychiat, Dept Clin Sci, Umea, Sweden
[3] Dept Psychiat, Sector NE, Malmo, Sweden
[4] Univ Aarhus, Inst Basic Psychiat Res, Dept Psychiat Demog, Aarhus, Denmark
[5] Landspitallin, Dept Psychiat, Reykjavik, Iceland
[6] Turku Univ, Dept Psychiat, Turku, Finland
[7] Roskilde Cty Psychiat Hosp Fjorden, Roskilde, Denmark
[8] Lund Univ, Dept Clin Neurosci, Div Psychiat, Lund, Sweden
[9] Gentofte Univ Hosp, Dept Psychiat, Gentofte, Denmark
[10] Bispebjerg Hosp, Community Mental Hlth Ctr, Copenhagen, Denmark