1. Department of Psychosomatic Medicine and PsychotherapyUniversity Hospital Tuebingen Tuebingen Germany
2. Center for Psychosocial Medicine, Department of General Internal Medicine and PsychosomaticsHeidelberg University Hospital Heidelberg Germany
3. Clinic for Psychosomatic Medicine and Psychotherapy, LVR Hospital EssenUniversity of Duisburg‐Essen Essen Germany
4. Institute for Clinical Epidemiology and Applied Biometry, Medical Faculty Tuebingen Tuebingen Germany
5. Clinical Institute of Psychosomatic Medicine and PsychotherapyUniversity Hospital Duesseldorf Duesseldorf Germany
6. Department of Psychosomatic Medicine and PsychotherapyHannover Medical School Hannover Germany
7. Institute and Outpatient Clinic for Psychosomatic Medicine and PsychotherapyUniversity Hospital Hamburg‐Eppendorf Hamburg Germany
8. Department of Psychosomatic Medicine and Psychotherapy, Klinikum rechts der IsarTechnical University of Munich Munich Germany
9. Department of Psychosomatic Medicine and PsychotherapyLWL University Clinic, Ruhr‐University Bochum Bochum Germany
10. Clinic for Psychosomatic Medicine and PsychotherapyUniversity Hospital Muenster Muenster Germany
11. Department of Psychosomatic Medicine and PsychotherapyUniversity Hospital of Ulm Ulm Germany
12. Department of Psychosomatic Medicine and PsychotherapyUniversity Hospital Freiburg Freiburg Germany