1. Department of Psychosomatic Medicine and Psychotherapy University Hospital of Erlangen, Friedrich‐Alexander University Erlangen‐Nürnberg (FAU) Erlangen Germany
2. Institute of Medical Informatics, Biometry and Epidemiology Friedrich‐Alexander University Erlangen‐Nürnberg (FAU) Erlangen Germany
3. Department of Psychosomatic Medicine and Psychotherapy University Clinic of Bonn Bonn Germany
4. Department of Psychosomatic Medicine and Psychotherapy Ulm University Medical Center Ulm Germany
5. Department of Psychosomatic Medicine and Psychotherapy Christophsbad Hospital Göppingen Germany
6. Department of Psychosomatics and Psychotherapy Medical Faculty and University Hospital of Cologne Cologne Germany
7. Department of Psychotherapy and Psychosomatic Medicine, Faculty of Medicine Technische Universität Dresden Dresden Germany