1 Istanbul Medical School, Department of Internal Medicine, Division of Geriatrics, Istanbul University, Capa, 34390 Istanbul, Turkey. Electronic address: gbahatozturk@yahoo.com.
2 Istanbul Medical School, Department of Internal Medicine, Division of Endocrinology and Metabolism, Istanbul University, Capa, 34390 Istanbul, Turkey.
3 Istanbul Medical School, Department of Internal Medicine, Division of Geriatrics, Istanbul University, Capa, 34390 Istanbul, Turkey.