1Department of Obstetrics and Gynecology, Mehmet ali Aydinlar University, Acibadem Altunizade Hospital, Istanbul, Turkey

2Department of Obstetrics and Gynecology, Acibadem Altunizade Hospital, Istanbul, Turkey

3Department of Obstetrics and Gynecology, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey

4Department of Obstetrics and Gynecology, University of Health Sciences Turkey, Zeynep Kamil Maternity and Children’s Training and Research Hospital, Istanbul, Turkey

5Department of Obstetrics and Gynecology, University of Health Sciences Turkey, Kartal Dr. Lutfi Kirdar City Hospital, Istanbul, Turkey

6Department of Obstetrics and Gynecology, Bezmialem Vakif University, University Hospital, Istanbul, Turkey

Salih Yilmaz, Department of Obstetrics and Gynecology, Acibadem Altunizade Hospital, Yurtcan Sokak No. 1, Uskudar, Istanbul 34662, Turkey. Email: [email protected]