Daza, Marcial, Carlos Betancourt, Juan Vásquez, Carlos Lugo, and Guillermo Llaque. 2020. “Upper Urinary Tract Urothelial Carcinoma. Case Report and Review of the Literature”. Boletin Médico de Postgrado 36 (1): 56-59. https://mail.revistas.uclave.org/index.php/bmp/article/view/2630.