1. Department of Psychiatry, Medical University of Graz, Graz, Austria;
2. Department of Psychiatry, Ludwig-Maximilians-University, Munich, Germany;
3. Sigmund Freud Hospital Graz, Graz, Austria;
4. Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany;
5. Department of Angiology, Medical University of Graz, Graz, Austria;
6. Department of Psychiatry and Psychotherapy, Division of Biological Psychiatry, Medical University of Vienna, Vienna, Austria