1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Istanbul Faculty of Medicine, University of Istanbul, Istanbul, Turkey.
2. Hamidiye Faculty of Nursing, Department of Internal Medicine, Nursing University of Health Sciences Turkey, Istanbul, Turkey.
3. Department of Healthcare Management, Faculty of Health Sciences, Istanbul University-Cerrahpasa, Istanbul, Turkey.
4. Division of Medical Sciences, Department of Public Health, Istanbul Faculty of Medicine, University of Istanbul, Istanbul, Turkey.