title: Endoscopic retrograde cholangiopancreatography cannulation in the difficult duct: Which technique should you pull out of your bag?
authors.affiliation: Division of Gastroenterology and Hepatology, Basil I. Hirschowitz Endoscopic Center of Excellence, University of Alabama at Birmingham, Birmingham, USA.
authors.forename: Ali M
authors.initials: AM
authors.lastname: Ahmed
authors.affiliation: Division of Gastroenterology and Hepatology, Basil I. Hirschowitz Endoscopic Center of Excellence, University of Alabama at Birmingham, Birmingham, USA.
authors.forename: C Mel
authors.initials: CM
authors.lastname: Wilcox
mesh_terms: D002404:Catheterization; D002760:Cholangiopancreatography, Endoscopic Retrograde; D006801:Humans; D016717:Sphincterotomy, Endoscopic; D016896:Treatment Outcome