1. University Centre for Geriatrics, ZNA (Ziekenhuis Netwerk Antwerpen), Antwerpen, Belgium

2. Odense University Hospital, Clinic of Geriatric Medicine, Svendborg, Denmark

3. University of Birmingham, Medical Research Council-Versus Arthritis Centre for Musculoskeletal Ageing Research, Birmingham, United Kingdom

4. İstanbul University İstanbul Faculty of Medicine, Department of Geriatrics Medicine, Division of Geriatrics, İstanbul, Turkey