1. Department of Geriatric Medicine, University Medical Center 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 Center for Health Sciences and Primary Care, University Medical Center 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. School of Medicine University College Cork, National University of Ireland Cork Ireland
9. Department of Geriatric Medicine Cork University Hospital Cork Ireland
10. Louvain Drug Research Institute (LDRI), Clinical Pharmacy Research Group Université catholique de Louvain—UCLouvain Brussels Belgium
11. Pharmacy Department, Cliniques universitaires Saint‐Luc Université catholique de Louvain—UCLouvain Brussels Belgium
12. Sorbonne Paris Cité, Faculté de Médecine Paris Descartes University Paris France