Características clínicas y manométricas en pacientes ancianos con acalasia Ortiz-Olvera, González-Martínez, Dehesa-Violante, Morán-Villota

Total loss of the covering of a metallic stent during esophageal leak treatment J.J. Villarreal-Galvan, J.A. Gonzalez-Gonzalez, H.J. Maldonado Garza

Risk factors for colorrectal polyps in a mexican population González-González, Maldonado-Garza, Flores-Rendón, Garza-Galindo