Mekonnon, Amsalu Worku, Dawud Ahmed, and Getachew Alemayehu. “Monthly Bleeding Umbilical Endometriosis: Case Report”. Ethiopian Journal of Reproductive Health 16, no. 3 (August 2, 2024). Accessed February 7, 2025. https://mail.ejrh.org/index.php/ejrh/article/view/711.