1. Endocrinology and Metabolism Disease, Darıca Farabi State Hospital, Kocaeli, Turkey
2. Endocrinology and Metabolism Disease, Dicle University, Diyarbakır, Turkey
3. Endocrine and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Diabetes, National Institutes of Health, Bethesda, Maryland, USA
4. Endocrinology and Metabolism Disease, Ankara Numune Training and Research Hospital, Ankara, Turkey
5. Endocrinology and Metabolism Disease, Hitit University, Çorum, Turkey