Sood, Nishi, and Manish Thakur. “Determination of Frequency of Specified Structural Congenital Anomalies and the Pattern of Determinants Affecting Congenital Malformations in Prenatally Diagnosed Fetal Anomaly Cases before 20 Weeks”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 6, no. 12 (November 23, 2017): 5572–5579. Accessed November 25, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/3891.