1. Department of Palliative Medicine, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
2. Institute for Medical Sociology, Health Services Research, and Rehabilitation Science (IMVR), Faculty of Human Sciences and Faculty of Medicine University of Cologne Cologne Germany
3. Department of Educational Science and Mixed‐Methods‐Research, Faculty of Educational and Social Sciences University of Education Heidelberg Heidelberg Germany
4. Center for Health Services Research, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
5. Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf (CIO ABCD), Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
6. Department of Psychosomatics and Psychotherapy, Faculty of Medicine (FM) University Hospital Cologne (UHC) Cologne Germany
7. Department of Health Services Research, School of Medicine and Health Sciences Carl von Ossietzky University Oldenburg Oldenburg Germany
8. Department of Psychiatry and Psychotherapy, FM UHC Cologne Germany
9. Sociology in Rehabilitation, Faculty of Rehabilitation Technical University Dortmund Dortmund Germany
10. Department of Business Administration and Health Care Management, Faculty of Management, Economics and Social Sciences (FMESS) University of Cologne (UoC) Cologne Germany
11. PMV Health Care Research Group, FM, UoC Cologne Germany
12. Institute for Sociology and Social Psychology, FMESS UoC Cologne Germany
13. Institute for Health Economics and Clinical Epidemiology, FM UHC Cologne Germany