1. Department of Obstetrics and Gynecology, Egemed Hospital, Aydın, Turkey;
2. Department of Obstetrics and Gynecology, Marmara University Hospital, Istanbul, Turkey;
3. Department of Obstetrics and Gynecology, Bagcilar Research and Training Hospital, Istanbul, Turkey;
4. 2nd Department of Obstetrics and Gynecology, Hippokratio University Hospital, Thessaloniki, Greece