1. University Hospital of Old Age Psychiatry and Psychotherapy; University of Bern (UPD); Bern Switzerland
2. Graduate School for Health Science; University of Bern; Bern Switzerland
3. Geriatrisches Zentrum am Universitätsklinikum Heidelberg; AGAPLESION Bethanien Krankenhaus; Heidelberg Germany
4. Department of Thoracic Oncology; Thoraxklinik Heidelberg, Heidelberg University Hospital, Translational Lung Research Center Heidelberg (TLRC-H), German Center for Lung Research (DZL); Röntgenstraße 1, D-69126, Heidelberg Germany
5. Institute for Evidence in Medicine, Medical Center – University of Freiburg, Faculty of Medicine; University of Freiburg; Freiburg Germany
6. Cochrane Germany; Cochrane Germany Foundation; Freiburg Germany
7. AGAPLESION Bethesda Clinic Ulm, Research Unit on Ageing; Ulm Germany
8. Department of Epidemiology; Boston University School of Public Health; Boston USA
9. Institute for Geriatric Research; University of Ulm Medical Center; Ulm Germany
10. AGAPLESION Bethesda Clinic Ulm; Geriatric Centre Ulm/Alb-Donau; Ulm Germany
11. Department of Medicine II, Medical Center; University of Freiburg, Freiburg, Germany; Freiburg Germany
12. Care and Public Health Research Institute, Department of Health Services Research; Maastricht University; Maastricht Netherlands
13. Public Health Service Flevoland (GGD Flevoland); Department of Health Policy & Research; Lelystad, Netherlands Netherlands
14. Health Care and Social Work Division; Windesheim University of Applied Sciences; Almere The Netherlands Netherlands
15. Robert Bosch Gesellschaft für Medizinische Forschung mbH; Stuttgart Germany