Rodríguez-Vargas, B. et al. 2014. Histologic and endoscopic characteristics of gastric cancer diagnosed in a national hospital of Callao, Peru. Revista Peruana de Medicina Experimental y Salud Pública. 30, 1 (Feb. 2014). DOI:https://doi.org/10.17843/rpmesp.2013.301.149.