Torres Ugalde, Carlos EnriqueOrdóñez Montesinos, RubénVázquez Vega, HeribertoGuillén Astudillo, César2014-07-042014-07-041978http://dspace.ucuenca.edu.ec/handle/123456789/18346application/pdfopenAccesshttp://creativecommons.org/licenses/by-nc-sa/3.0/ec/GastroenterologiaHepatitisbachelorThesis