1. Istanbul Kanuni Sultan Suleyman Research and Teaching Hospital, Istanbul, Turkey;
2. Department of Obstetrics and Gynecology, Istanbul Medipol University Faculty of Medicine, Fatih, Turkey;
3. Department of Obstetrics and Gynecology, Beykent University, Istanbul, Turkey;
4. Maternal-Fetal Medicine Unit, Acıbadem University Atakent Hospital, Istanbul, Turkey