Estapé, Gonzalo, Sonia Boudrandi, Gustavo Veirano, Ricardo Cardozo, Rubens Neirotti, and Guillermo Neirotti. 1987. “Surgical Anatomy of the Duodenal Papilla”. Cirugía Del Uruguay 57 (6):193-95. https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/3802.