Jugder, Ganzug, Oyunchimeg Unshigbayar, Purevdorj Ichinkhorloo, Tsolmon Boldoo, and Erkhembulgan Purev. “The Use of Double Test Biomarkers to Predict Fetal Nuchal Translucency Thickness in the Diagnosis of Trisomy 21: A Compromise Between Sensitivity and Specificity”. Central Asian Journal of Medical Sciences 4, no. 3 (September 25, 2018): 230–237. Accessed July 6, 2024. https://mongoliajol.info/index.php/CAJMS/article/view/2763.