Rosenberg, D., N. Carvalho, and E.R Rosenberg. “Colecistectomía Y gastrectomía”. Colombia Medica 1, no. 2 (June 30, 1970): 55–75. Accessed April 27, 2024. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/3303.