1. Department of Perinatology, Osmangazi University, Eskişehir, Turkey
2. Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Research and Training Hospital, Istanbul, Turkey
3. Department of Obstetrics and Gynecology, Şişli Hamidiye Etfal Research and Training Hospital, Istanbul, Turkey
4. Department of Perinatology, Medipol University, Istanbul, Turkey
5. Department of Perinatology, Samsun Research and Training Hospital, Samsun, Turkey
6. Department of Obstetrics and Gynecology, Beykent University, Istanbul, Turkey