Mehboob, Rabia, Hira Mumtaz, and Mustafa Ahmed. “Fetal Intra-Abdominal Umbilical Vein Varix: A Rare Perinatal Diagnosis”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 13, no. 11 (October 9, 2024): 3317–3319. Accessed October 2, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/14697.