Alpízar-Alpízar, Warner, Rafaela Sierra, Patricia Cuenca, Clas Une, Fernando Mena, and Guillermo Ignacio Pérez-Pérez. 2005. “Association of the p53 Codon 72 Polymorphism to Gastric Cancer Risk in a Hight Risk Population of Costa Rica”. Revista De Biología Tropical 53 (3-4):317–324. https://doi.org/10.15517/rbt.v53i3-4.14406.