Mechán, V., J. Ramírez, G. Cerrillo, L. Ticse, and T. Ramos. “Pernicious Anemia and Gastric Athropy”. ACTA MEDICA PERUANA, Vol. 29, no. 4, Dec. 2012, pp. 204-7, https://amp.cmp.org.pe/index.php/AMP/article/view/1222.