1. Department of Internal Medicine, Division of Geriatrics, Ege University Faculty of Medicine, Izmir, Turkey
2. Department of Public Health, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
3. Department of Internal Medicine, Division of Geriatrics, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey
4. Department of Internal Medicine, Division of Geriatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
5. Department of Internal Medicine, Division of Geriatrics, Ataturk University Faculty of Medicine, Erzurum, Turkey