Coronel Mosquera, Cornelio EnmanuelHeredia Ayala, YanethOlave Movilla, EdgarYépez Villareal, Edmundo Silvio2014-07-042014-07-041986http://dspace.ucuenca.edu.ec/handle/123456789/18479application/pdfopenAccesshttp://creativecommons.org/licenses/by-nc-sa/3.0/ec/GastroenterologiaColelitiasisbachelorThesis