1 Department of Psychiatry and Psychotherapy, St. Hedwig-Krankenhaus, Charité-Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
2 Department of Psychiatry and Psychotherapy, University of Cologne Medical School, Cologne, Germany.
3 Department of Psychiatry and Psychotherapy, University Hospital of Dresden, Dresden, Germany.