1. Institute for Community Medicine University Medicine Greifswald Greifswald Germany
2. Department of Psychiatry and Psychotherapy University Medicine Greifswald Greifswald Germany
3. Department of Medicine A University Medicine Greifswald Greifswald Germany
4. Martin Luther‐Hospital Berlin Germany
5. Department of Internal Medicine VI: Psychosomatic Medicine and Psychotherapy University Hospital Tuebingen Tuebingen Germany