1. Department for Psychosomatic Medicine and Psychotherapy, Faculty of Medicine, Center for Health Communication and Health Services Research University Hospital Bonn Bonn Germany
2. Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD) Bonn Germany
3. University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute of Medical Sociology, Health Services Research and Rehabilitation Science, Chair of Health Services Research Cologne Germany
4. University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute of Medical Sociology, Health Services Research and Rehabilitation Science, Chair of Medical Sociology Cologne Germany