1. Ankara Children’S Hematology And Oncology Training And Research Hospital, Clinic Of Pediatric Endocrinology, Ankara, Turkey
2. Ankara Children’S Hematology And Oncology Training And Research Hospital, Biochemistry Laboratory, Ankara, Turkey
3. Yıldırım Beyazıt University Faculty Of Medicine, Ankara Children’S Hematology And Oncology Training And Research Hospital, Clinic Of Pediatric Endocrinology, Ankara, Turkey