Pradhan, Neelam, and Raju Pradhan. “Single Umbilical Artery: A Case Report”. Nepal Journal of Obstetrics and Gynaecology 1, no. 2 (December 14, 2009): 59–60. Accessed November 24, 2024. https://nepjol.info/index.php/NJOG/article/view/2400.