1. Yeditepe University Faculty of Medicine, Department of Pediatric Endocrinology, İstanbul, Turkey

2. Diyarbakır Child Health Hospital, Clinic of Neonatology, Diyarbakır, Turkey

3. University of Exeter Medical School, Institute of Biomedical and Clinical Science, Exeter, United Kingdom

4. University of Health Sciences, Diyarbakır Gazi Yaşargil Training and Research Hospital, Clinic of Pediatric Endocrinology, Diyarbakır, Turkey