1. Department of Obstetrics and Gynecology, Gurgan Clinic IVF and Women Health Center, Ankara, Turkey;
2. Department of Obstetrics and Gynecology, Duzce University, Duzce, Turkey;
3. Department of Biostatistics, Ankara University, Ankara, Turkey;
4. Department of Obstetrics and Gynecology, Liv Hospital Ankara, Ankara, Turkey