Buenaventura, N. ., M. P. Pahati, and L. Garcia. “Urachal Bladder Mass Presenting As a Colovesical Fistula”. Philippine Journal of Urology, vol. 26, no. 2, Feb. 2020, pp. 64-67, https://pjuonline.com/index.php/pju/article/view/26.