Ortiz, Ana P., Humberto M. Guiot, Olga L. Díaz-Miranda, Leticia Román, Joel Palefsky, and Vivian Colón-López. “Recognizing and Treating Anal Cancer: Training Medical Students and Physicians in Puerto Rico”. Puerto Rico Health Sciences Journal 32, no. 4 (November 22, 2013). Accessed November 3, 2025. https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/951.