1. Department of Geriatric Medicine University Medical Centre Utrecht, Utrecht University Utrecht The Netherlands
2. Department of General Internal Medicine, Inselspital Bern University Hospital, University of Bern Bern Switzerland
3. Institute of Primary Health Care (BIHAM) University of Bern Bern Switzerland
4. Department of Primary Education School of Education, University of Ioannina Ioannina Greece
5. Cochrane Netherlands/Julius Centre for Health Sciences and Primary Care University Medical Centre Utrecht, Utrecht University Utrecht The Netherlands
6. Institute of Social and Preventive Medicine (ISPM) University of Bern Bern Switzerland
7. Department of Medicine and Ageing Sciences University G. D'Annunzio Chieti Italy
8. Li Ka Shing Knowledge Institute St. Michael's Hospital, Unity Health Toronto Toronto Ontario Canada
9. Epidemiology Division and Institute for Health Policy, Management, and Evaluation, Dalla Lana School of Public Health and Institute for Health, Management, and Evaluation University of Toronto Toronto Ontario Canada
10. Department of Geriatric Medicine University of Toronto Toronto Ontario Canada
11. Paris Descartes University Sorbonne Paris Cité, Faculté de Médecine Paris France