1. Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Bern, Bern, Switzerland
2. Department of Psychosomatic Medicine, Inselspital, University of Bern, Bern, Switzerland
3. Psychologische Hochschule Berlin, Berlin, Germany
4. Sanatorium Kilchberg, Kilchberg, Switzerland
5. Department of Psychiatry, Psychotherapy, and Psychosomatics, University Hospital of Psychiatry Zurich, Zurich, Switzerland
6. Department of Psychology and Brain Sciences, University of Delaware, Newark, DE, USA