1. Department of Obstetrics and Gynecology, Kanuni Sultan Suleyman Research and Training Hospital, Istanbul, Turkey;
2. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, University of North Carolina, Chapel Hill, NC, USA;
3. Department of Obstetrics and Gynecology, Istanbul University Cerrahpasa Medical Faculty, Division of Maternal Fetal Medicine, Istanbul, Turkey