1. Maternal-Fetal Medicine Unit, Istanbul Health Sciences University, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey;
2. Department of Obstetrics and Gynecology, Istanbul Health Sciences University, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey;
3. Department of Obstetrics and Gynecology, Istanbul Health Sciences University, Zeynep Kamil Maternity and Children’s Training and Research Hospital, Istanbul, Turkey;
4. Department of Obstetrics and Gynecology, Istanbul Health Sciences University, Umraniye Training and Research Hospital, Istanbul, Turkey;
5. Department of Biochemistry, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey