1. Department of Gynecology, Gynecological Clinic, Etlik Zubeyde Hanim Women’s Health Education and Research Hospital, Ankara, Turkey;
2. Department of Obstetrics and Gynecology, Perinatology & High-Risk Pregnancy Clinic, Etlik Zubeyde Hanim Women’s Health Education and Research Hospital, Ankara, Turkey;
3. Department of Epidemiology, Institute of Health Sciences, Hacettepe University, Ankara, Turkey;
4. Etlik Zübeyde Hanim Women's Teaching and Research Hospital, Department of Obstetrics and Gynecology Infertility Unit, Ankara, Turkey;
5. Hizan Government Hospital, Department of Family Medicine, Bitlis, Turkey;
6. Abant Izzet Baysal University, Department of Obstetrics and Gynecology, Bolu, Turkey;
7. Ankara Teaching and Research Hospital, Department of Pathology, Ankara, Turkey