1. Department of Psychiatry and Psychotherapy, Faculty of Medicine and Cologne University Hospital, University of Cologne, Kerpener Str. 62, 50924 Cologne, Germany
2. Institute for Medical Sociology, Health Services Research and Rehabilitation Science, Faculty of Human Sciences, Faculty of Medicine and University Hospital Cologne, University of Cologne, Eupener Str. 129, 50933 Cologne, Germany
3. PMV Research Group, Faculty of Medicine and Cologne University Hospital, University of Cologne, Herderstraße 52, 50931 Cologne, Germany
4. Department of Psychosomatics and Psychotherapy, Faculty of Medicine and Cologne University Hospital, University of Cologne, Weyertal 76, 50931 Cologne, Germany
5. Department of Business Administration and Health Care Management, Faculty of Management, Economics and Social Sciences, University of Cologne, Albertus-Magnus-Platz, 50923 Cologne, Germany
6. Chair of General Practice II and Patient-Centredness in Primary Care, Institute of General Practice and Primary Care, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Str. 50, 58455 Witten, Germany
7. Institute of Sociology and Social Psychology (ISS), Faculty of Management, Economics and Social Sciences, University of Cologne, Albertus-Magnus-Platz, 50923 Cologne, Germany
8. Centre for Health Services Research Cologne (ZVFK), University of Cologne, Eupener Str. 129, 50933 Cologne, Germany
9. German Center for Neurodegenerative Diseases (DZNE), Venusberg-Campus 1/99, 53127 Bonn, Germany
10. Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany