title: Response.
authors.affiliation: Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Nakai
authors.affiliation: Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Isayama
authors.affiliation: Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Koike
mesh_terms: D014670:Ampulla of Vater / Q000601:surgery*; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000009:adverse effects*; D042883:Choledocholithiasis / Q000601:surgery*; D002779:Cholestasis / Q000601:surgery*; D003135:Common Bile Duct / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D010183:Pancreatic Ducts / Q000601:surgery*; D010190:Pancreatic Neoplasms / Q000601:surgery*; D010195:Pancreatitis / Q000209:etiology*