Monib, Sherif, and Athanasios G. Xanthis. “Umbilical Sebaceous Cyst Mimicking Infected Urachal Sinus”. European Journal of Case Reports in Internal Medicine 6, no. 5 (April 29, 2019). Accessed April 28, 2024. https://www.ejcrim.com/index.php/EJCRIM/article/view/1098.