Papilla of Vater morphology as an influencing factor in successful cannulation during resident training in advanced endoscopy. A prospective clinical study D.E. Benavides-Salgado; R.A. Jiménez-Castillo; J.E. Cuéllar-Monterrubio; J.O. Jáquez-Quintana; A. Garza-Galindo; C. Cortes-Hernández; H.J. Maldonado-Garza; D. García-Compeán; J.A. González-González;

New tools for the grading and scoring of gastro-esophageal reflux disease S. Siboni; M. Sozzi; P. Visaggi; R. De Maron; E. Asti;

Performance of the predictive criteria of the American Society for Gastrointestinal Endoscopy in the diagnosis of choledocholithiasis at a secondary care public hospital in the State of Nuevo León, Mexico C. Ovalle-Chao; D.A. Guajardo-Nieto; R.A. Elizondo-Pereo;