Vildan Binay Safer1, Umut Safer2, Ilker Tasci3. 1. Department of Physical Medicine and Rehabilitation, Ankara Physical Medicine and Rehabilitation Training and Research Hospital, 06230 Ankara, Turkey. Electronic address: binayvildan@yahoo.com. 2. Department of Geriatrics, Gulhane School of Medicine, 06018 Ankara, Turkey. 3. Department of Internal Medicine, Gulhane School of Medicine, 06018 Ankara, Turkey.