1. Department of Obstetrics and Gynecology, Health Sciences University Kayseri Education and Research Hospital, Kayseri, Turkey;
2. Department of Obstetrics and Gynecology, Erciyes University Faculty of Medicine, Kayseri, Turkey;
3. Department of Obstetrics and Gynecology, Health Sciences University Zeynep Kamil Maternity and Children Training and Research Hospital, İstanbul, Turkey;
4. Department of Obstetrics and Gynecology, Nevsehir Government Hospital, Nevsehir, Turkey;
5. Department of Public Health, Erciyes University Faculty of Medicine, Kayseri, Turkey