Castillo Contreras, O., E. Ruíz Barahona, A. Yabar Berrocal, and O. Frisancho Velarde. “Brunner’s Gland Adenoma. Report of a Case and Literature Review”. ACTA MEDICA PERUANA, Vol. 26, no. 4, Sept. 2009, pp. 239 -42, http://54.39.98.165/index.php/AMP/article/view/1534.