Emura, F., Gralnek, I., Sano, Y. y Baron, T.H. 2017. Improving early detection of gastric cancer: a novel systematic alphanumeric-coded endoscopic approach. Revista de Gastroenterología del Perú. 33, 1 (ago. 2017), 52–8. DOI:https://doi.org/10.47892/rgp.2013.331.232.