1. Servicio de Geriatría, Hospital Universitario Ramón y Cajal (IRYCIS), Madrid, Spain
2. Department of Internal Medicine, Division of Geriatrics, Istanbul Medical School, Istanbul University, Istanbul, Turkey
3. Center for Geriatric Medicine, University Heidelberg, Agaplesion Bethanien Krankenhaus, Heidelberg, Germany
4. Research Department, Centre Hospitalier Universitaire de Clermont-Ferrand, Clermont-Ferrand, France
5. Department of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
6. Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism, Uppsala University, Uppsala, and Theme Ageing, Karolinska University Hospital, Stockholm, Sweden
7. MRC Lifecourse Epidemiology Unit, University of Southampton; Southampton, UK; and Department of Epidemiology, University of Oxford, OX, UK
8. Instituto di Medicina Interna e Geriatria, Università Cattolica del Sacro Cuore, Roma, Italy
9. Department of Geriatrics, Hospital and University of Toulouse, Toulouse, France
10. NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Faculty of Medical Sciences, Newcastle University, Newcastle, UK
11. Department of Gastroenterology and Clinical Nutrition, Centre Hospitalier Universitaire de Nice, Université Côte d’Azur, Nice, France
12. Department of Internal Medicine-Geriatrics, Institute for Biomedicine and Ageing, Friedrich-Alexander-University, Erlangen-Nürnberg, Germany
13. Department of Geriatrics, First Faculty of Medicine, Charles University and General Faculty Hospital, Prague, Czech Republic
14. Department Geriatrics, University of Antwerp, Ziekenhuisnetwerk Antwerpen (ZNA), Antwerp, Belgium
15. Department of Health Sciences, Faculty of Science, Vrije Universiteit Amsterdam; and the Amsterdam Public Health Research Institute; Amsterdam, The Netherlands
16. Department of Medicine, Geriatric section, University of Verona, Verona, Italy
17. Department of Gerontology and Department of Frailty in Ageing, Vrije University Brussel; Brussels, Belgium
18. Geriatrician at the Teaching Hospital AZ Alma; Eeklo, Belgium; and University of Luxembourg; Luxembourg City, Luxenbourg
19. Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Università di Milano; Milan, Italy
20. Geriatria, Accettazione geriatrica e Centro di ricerca per l’invecchiamento, IRCCS INRCA, Ancona, Italy
21. Center for Metabolic Bone Diseases, University of Sheffield Medical School; Sheffield, UK and Institute for Health and Ageing, Australian Catholic University; Melbourne, Australia
22. Geriatric Clinic Unit, Geriatric Rehabilitation Department, University-Hospital of Parma, Department of Medicine and Surgery
23. Department of Ageing and Health, Guys and St Thomas’ NHS Foundation Trust; London, UK
24. Department of Rehabilitation and Geriatrics, University of Geneva; Geneva, Switzerland
25. Department of General Practice and Primary Health Care, University of Helsinki and Helsinki University Central Hospital, Unit of Primary Health Care; Helsinki, Finland
26. Bone and Cartilage Metabolism Unit, University of Liège; Liège, Belgium
27. Department of Bone Disease, University of Geneva; Geneva, Switzerland
28. Geriatrics Department, Parc Salut Mar. Rehabilitation Research Group, Institut Hospital del Mar d’Investigacions Mèdiques (IMIM). Universitat Autònoma de Barcelona, Universitat Pompeu Fabra; Barcelona, Spain
29. Department of Health Services Research, Maastricht University; Maastricht, the Netherlands