1. Department of Obstetrics and Gynecology, Yeni Yuzyil University Private Gaziosmapasa Hospital, Istanbul, Turkey
2. Department of Obstetrics and Gynecology, Zeynep Kamil Gynecologic and Pediatric Training and Research Hospital, Istanbul, Turkey
3. Department of Perinatology, Zeynep Kamil Maternity and Children’s Training and Research Hospital, Istanbul, Turkey
4. Department of Obstetrics and Gynecology, Zeynep Kamil Maternity and Children’s Hospital, Istanbul, Turkey