1. Department of Obstetrics and Gynaecology, Faculty of Medicine, Yozgat Bozok University, Yozgat, Turkey
2. Department of Obstetrics and Gynaecology, Etlik Zubeyde Hanim Women's Health Training and Research Hospital, Ankara, Turkey
3. Department of Gynaecologic Oncology, Ankara Zekai Tahir Burak Women’s Health and Research Hospital, Ankara, Turkey
4. Department of Family Medicine, Faculty of Medicine, Baskent University, Ankara, Turkey
5. Department of Obstetrics, Dr Ali Kemal Belviranli Hospital for Obstetrics and Paediatrics, Konya, Turkey