1. Ankara City Hospital, Clinic of Geriatrics, Ankara, Turkey

2. University of Health Sciences Turkey, Samsun Training and Research Hospital, Clinic of Geriatrics, Samsun, Turkey

3. University of Health Sciences Turkey, Antalya Training and Research Hospital, Clinic of Geriatrics, Antalya, Turkey

4. Ankara University Faculty of Medicine; İbn-i Sina Hospital, Clinic of Geriatrics, Ankara, Turkey