1. Obstetrics and Gynecology, Prof. Dr. Ilhan Varank Sancaktepe Education and Research Hospital, Istanbul, Turkey
2. Obstetrics and Gynecology, Memorial Bahcelievler Hospital, Istanbul, Turkey
3. Department of Obstetrics and Gynaecology, Klinikum Oldenburg, AöR, Carl von Ossietzky Oldenburg University, Oldenburg, Germany
4. Obstetrics and Gynecology, Bahcelievler State Hospital, Istanbul, Turkey
5. Obstetrics and Gynecology, Sariyer Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey