1. Department of Obstetrics and Gynecology, Turkish Niger Friendship Hospital Niamey, Niamey, Niger
2. Department of Obstetrics and Gynecology, Health Sciences University, Bakirkoy Dr Sadi Konuk Training and Research Hospital, Istanbul, Turkey
3. Department of Obstetrics and Gynecology, Health Sciences University, Tepecik Training and Research Hospital, Izmir, Turkey