Balén, E., J. Suárez, I. Ariceta, B. Oronoz, J. Herrera, and J.M. Lera. 2008. “Laparoscopic Surgery in Colorectal Diseases”. Anales Del Sistema Sanitario De Navarra 28 (November):67-80. https://recyt.fecyt.es/index.php/ASSN/article/view/4734.