Khan, Shazia Khalid, Shahida Sheikh, and Amatullah Zarreen. “Ultrasound Screening for Fetal Abnormalities”. Annals of King Edward Medical University 10, no. 2 (May 7, 2016). Accessed November 22, 2024. https://annalskemu.org/journal/index.php/annals/article/view/1186.