1Clinic of Psychosomatic Medicine and Psychotherapy, Georg August University Göttingen, Göttingen, Germany
2International Psychoanalytic University (IPU) Berlin, Berlin, Germany
3Department of General Psychiatry, University of Heidelberg, Heidelberg, Germany
4Clinic of Psychosomatics and Psychotherapy, Justus Liebig University Giessen, Giessen, Germany
5Department of Psychosomatic Medicine and Psychotherapy, Technical University of Munich, Munich, Germany
6Wiesbaden Academy of Psychotherapy, Wiesbaden, Germany
7Katholische Universität Eichstätt-Ingolstadt, Eichstätt, Germany
8Department of Clinical Psychology and Psychotherapy, Georg August University Göttingen, Göttingen, Germany
9Department of Clinical Psychology and Psychotherapy, Goethe University Frankfurt, Frankfurt, Germany
10Department of Psychology, University of Heidelberg, Heidelberg, Germany