1. Department of Obstetrics and Gynaecology, Health Science University, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
2. Department of Perinatology, Medeniyet University, Istanbul, Turkey
3. Department of Obstetrics and Gynaecology, İnönü University, Malatya, Turkey
4. Department of Obstetrics and Gynaecology, Manisa State Hospital, Manisa, Turkey
5. Department of Obstetrics and Gynaecology, Erzincan Binali Yıldırım University Mengucek Gazi Training and Research Hospital, Erzincan, Turkey