title: A randomized double-blind trial of cholecystokinin during ERCP.
mesh_terms: D002404:Catheterization; D002760:Cholangiopancreatography, Endoscopic Retrograde; D002766:Cholecystokinin; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D011897:Random Allocation
chemical_list: D002766:Cholecystokinin