Figueroa Morales, Francisco EfraínWebster Coello, Jaime EduardoCoello Carrión, Iván Alberto2014-07-042014-07-041986http://dspace.ucuenca.edu.ec/handle/123456789/18448application/pdfopenAccesshttp://creativecommons.org/licenses/by-nc-sa/3.0/ec/GastroenterologiaNeoplasmas Del RectoNeoplasmas Del ColonbachelorThesis