1. Department for Psychotherapy and Biopsychosocial Health, Danube University Krems, Krems, Austria
2. Department of Psychosomatic Medicine and Psychotherapy, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
3. Department of Psychosomatic Medicine and Psychotherapy, Ulm University, Ulm, Germany
4. Department of Psychosomatic Medicine and Psychotherapy, University of Giessen, Giessen, Germany
5. Department of Psychosomatic Medicine and Psychotherapy, University of Marburg, Marburg, Germany
6. Department of Psychosomatic Medicine and Psychotherapy, Department of Mental Health, University Hospital Münster, Münster, Germany
7. Department of Psychosomatic Medicine and Psychotherapy, University Medical Center Freiburg, Freiburg, Germany