title: ERCP outcomes: defining the operators, experience, and environments.
authors.forename: Bret T
authors.initials: BT
authors.lastname: Petersen
mesh_terms: D002760:Cholangiopancreatography, Endoscopic Retrograde; D002983:Clinical Competence; D006272:Health Facility Environment; D006801:Humans; D017063:Outcome Assessment, Health Care