Ramírez-Ortega, Miguel Ángel, and Octavio Gamez-Torres. “Urethral Duplication With Giant Calculus. Case Report”. Revista Médica Del Instituto Mexicano Del Seguro Social, vol. 46, no. 2, Sept. 2021, pp. 179-83, https://revistamedica.imss.gob.mx/index.php/revista_medica/article/view/2118.