1. Department of Psychology, University of Kassel, Kassel, Germany
2. Department of Psychosomatic Medicine and Psychotherapy, Rostock University Medical Center, Rostock, Germany
3. Department of Psychology, University of Cologne, Cologne, Germany
4. Department of Psychosomatics, VAMED Rehabilitation Clinic Bad Grönenbach, Bad Grönenbach, Germany
5. Institute of Psychosocial Medicine, Psychotherapy and Psychooncology, Jena University Hospital, Jena, Germany