1. Department of Gynecology and Obstetrics, Kayseri Training and Research Hospital, Kayseri, Turkey,
2. Obstetrics and Gynecology Medicine, Dr Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey,
3. Gynecology and Obstetrics Clinic, Kayseri Memorial Private Hospital, Kayseri, Turkey, and
4. Department of Gynecology and Obstetrics, Ankara Atatürk Training and Research Hospital, Ankara, Turkey