1. Department of Obstetrics and Gynecology, Etlik Zubeyde Hanim Womens’ Health and Teaching Hospital, Health Science University, Ankara, Turkey;
2. Medical Faculty, Department of Obstetrics and Gynecology, Bozok University, Yozgat, Turkey;
3. Department of Obstetrics Clinic, Ministry of Health, Dr. Faruk Sükan Hospital for Obstetrics and Pediatrics, Konya, Turkey