[1] Univ Duisburg Essen, LVR Hosp Essen, Fac Med, Dept Psychiat & Psychotherapy, Virchowstr 174, D-45147 Essen, Germany
[2] Univ Wuppertal, Dept Psychol, Gaussstr 2 0, D-42119 Wuppertal, Germany
[3] Univ Duisburg Essen, LVR Hosp Essen, Fac Med, Dept Addict Med & Addict Behav, Virchowstr 174, D-45147 Essen, Germany
[4] LWL Univ Hosp Bochum, Dept Psychiat Psychotherapy & Prevent Med, Div Forens Psychiat, Alexandrinenstr 1, D-44791 Bochum, Germany