1. Department of Obstetrics and Gynecology, Faculty of Medicine, Sanko University, Gaziantep, Turkey;
2. Department of Obstetrics and Gynecology, Faculty of Medicine, Kirikkale University, Kirikkale, Turkey;
3. Department of Obstetrics and Gynecology, Aksehir Hospital, Konya, Turkey;
4. Department of Obstetrics and Gynecology, Ankara Mevki Military Hospital, Ankara, Turkey