Erdal Kurnaz1, Senay Savas-Erdeve2, Zehra Aycan3. 1. Attending Physician, Pediatric Endocrinology Clinic, Dr. Sami Ulus Obstetrics and Gynecology and Pediatrics Training and Research Hospital , Ankara-Turkey . 2. Associate Professor, Pediatric Endocrinology Clinic, Dr. Sami Ulus Obstetrics and Gynecology and Pediatrics Training and Research Hospital , Ankara-Turkey . 3. Professor Doctor, Pediatric Endocrinology Clinic, Dr. Sami Ulus Obstetrics and Gynecology and Pediatrics Training and Research Hospital , Ankara-Turkey .