Tosun, Alptekin, Enis Özkaya, Vakkas Korkmaz, and Yasemin Çekmez. “Ductus Venosus Doppler S/D Value Adjusted Alfa Fetoprotein Levels to Decrease False Positive Rates”. Gynecology Obstetrics & Reproductive Medicine 19, no. 3 (December 30, 2013): 153–156. Accessed March 29, 2024. https://gorm.com.tr/index.php/GORM/article/view/208.