Tosun, A., Özkaya, E., Korkmaz, V., & Çekmez, Y. (2013). Ductus Venosus Doppler S/D Value Adjusted Alfa Fetoprotein Levels to Decrease False Positive Rates. Gynecology Obstetrics &Amp; Reproductive Medicine, 19(3), 153–156. Retrieved from https://gorm.com.tr/index.php/GORM/article/view/208