1. Center for Health Communication and Health Services Research (CHSR) Department for Psychosomatic Medicine and Psychotherapy University Hospital Bonn Bonn Germany
2. Center for Integrated Oncology (CIO) University Hospital Bonn Bonn Germany
3. Division for Organizational Health Services Research Department of Health Services Research School of Medicine and Health Sciences Carl von Ossietzky University Oldenburg Oldenburg Germany
4. Department for Psychosomatic Medicine and Psychotherapy Faculty of Medicine University Hospital Bonn Bonn Germany
5. Clinical Institute of Psychosomatic Medicine and Psychotherapy Medical Faculty Heinrich‐Heine‐University Düsseldorf Düsseldorf Germany
6. Department of Integrated Oncology University Hospital Bonn Bonn Germany
7. Breast Cancer Center Rhein‐Sieg GFO Clinics Troisdorf Troisdorf Germany
8. Clinic of Gynecology, Obstetrics and Senology Breast Cancer Center Aachen–District of Heinsberg Hermann‐Josef‐Hospital Erkelenz Erkelenz Germany