1. Department of Medical Biochemistry, Ankara City Hospital, Ankara, Turkey
2. Department of Obstetrics and Gynecology, Ankara City Hospital, Ankara, Turkey
3. Department of Obstetrics and Gynecology, IVF Center, Vehbi Koç Vakfı American Hospital, Istanbul, Turkey
4. Department of Medical Biochemistry, Kirikkale University Faculty of Medicine, Kirikkale, Turkey
5. Department of Medical Biochemistry, Hacettepe University Faculty of Medicine, Ankara, Turkey