Use of a gastroscope armed with a transparent cap in the treatment of bleeding after endoscopic sphincterotomy - Leal-Salazar, J. A.; Gonzalez-Gonzalez, J. A.; Garza-Galindo, A. A.; Maldonado-Garza, H. J.; Flores Rendón, A. R.; Mar Ruiz, M. A. (Endoscopy, 2009)