Instrumentation evaluation: endoscopic retrograde cholangiopancreatography and endoscopic sphincterotomy.
D014670:Ampulla of Vater / Q000601:surgery*; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000295:instrumentation*; D005069:Evaluation Studies as Topic; D009803:Sphincter of Oddi / Q000601:surgery*