1. Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria;
2. Department of Pharmacology Biocenter, Goethe-University, Frankfurt, Germany;
3. Psychotherapy and Psychosomatic Medicine, Hospital for Psychiatry, Werneck, Germany;
4. Clinic for Psychiatry and Psychotherapy, Ludwig Maximilians University, Munich, Germany;
5. Research and Development Department, Dr. Willmar-Schwabe GmbH & Co. KG, Karlsruhe, Germany