1. Department of Obstetrics and Gynecology, School of Medicine, Koc University, Istanbul, Turkey
2. Department of Obstetrics and Gynecology, Zeynep Kamil Women and Children Diseases Training and Research Hospital, Istanbul, Turkey
3. Obstetrics and Gynecology, School of Medicine, Inonu University, Malatya, Turkey
4. Department of Neonatal Intensive Care Unit, School of Medicine, Koc University, Istanbul, Turkey