[1] Cent Inst Mental Hlth, Dept Psychiat, D-6800 Mannheim, Germany
[2] Univ Munich, Dept Psychiat & Psychotherapy, D-80539 Munich, Germany
[3] Univ Mainz, Dept Psychiat & Psychotherapy, D-6500 Mainz, Germany
[4] German Canc Res Ctr, D-6900 Heidelberg, Germany
[5] CIMH, Dept Biostat, Mannheim, Germany
[6] Free Univ Berlin, Benjamin Franklin Hosp, Dept Psychiat, D-1000 Berlin, Germany
[7] Humboldt Univ, Charite, Dept Psychiat, Berlin, Germany
[8] CIMH, Dept Psychopharmacol, Mannheim, Germany
[9] CIMH, Dept Addict Behav & Addict Med, Mannheim, Germany