1. Department of Psychiatry, University Hospital Münster, Münster, Germany
2. Department for Clinical Psychiatry and Psychotherapy, Medizinische Hochschule Hannover, Hannover, Germany
3. Department of Psychiatry, Psychotherapy and Psychosomatics, Herford, Germany
4. Psychiatric Hospital Wahrendorff, Sehnde, Germany
5. LWL Hospital Lengerich, Lengerich, Germany
6. Department of Psychiatry and Psychotherapy, Bethel, Germany
7. Department of Psychiatry and Psychotherapy, Langenhagen, Germany
8. Department for Social Psychiatry and Psychotherapy, Medizinische Hochschule Hannover, Hannover, Germany
9. LWL Hospital Münster, Münster, Germany
10. Department of Psychiatry, Psychotherapy and Psychosomatics, Lübbecke, Germany
11. St. Rochus-Hospital, Telgte, Germany
12. Department of Psychiatry, Psychotherapy and Psychosomatics, Evangelisches und Johanniter Klinikum Niederrhein, Oberhausen, Germany