Alpízar-Alpízar, Warner, Rafaela Sierra, Patricia Cuenca, Clas Une, Fernando Mena, and Guillermo Ignacio Pérez-Pérez. “Association of the P53 Codon 72 Polymorphism to Gastric Cancer Risk in a Hight Risk Population of Costa Rica”. Revista de Biología Tropical 53, no. 3-4 (April 29, 2014): 317-324. Accessed January 18, 2022. https://revistas.ucr.ac.cr/index.php/rbt/article/view/14406.