1. Department of Internal Medicine, Erciyes University Medical Faculty, Kayseri, Turkey.
2. Department of Metabolism and Endocrinology, Erciyes University Medical Faculty, Kayseri, Turkey.
3. Department of Biostatistics, Erciyes University Medical Faculty, Kayseri, Turkey.
4. Department of Endocrinology and Metabolism, Akdeniz University Medical Faculty, Antalya, Turkey.
5. Department of Biochemistry and Clinical Biochemistry, Erciyes University Medical Faculty, Kayseri, Turkey.