Whipple operation in gallbladder adenocarcinoma with invasion of the common bile duct and duodenum. Revista Universidad de Guayaquil, [S. l.], v. 66, n. 4, p. 55–66, 1986. DOI: 10.53591/rug.v66i4.879. Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/845. Acesso em: 5 dec. 2025.