title: Small papilla: another risk factor for post-sphincterotomy perforation.
authors.forename: M
authors.initials: M
authors.lastname: Matsushita
authors.forename: K
authors.initials: K
authors.lastname: Uchida
authors.forename: A
authors.initials: A
authors.lastname: Nishio
authors.forename: H
authors.initials: H
authors.lastname: Takakuwa
authors.forename: K
authors.initials: K
authors.lastname: Okazaki
mesh_terms: D014670:Ampulla of Vater / Q000473:pathology*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D004240:Diverticulum / Q000473:pathology*; D005260:Female; D042882:Gallstones / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D010537:Peritoneum / Q000293:injuries*; D012187:Retroperitoneal Space; D012307:Risk Factors; D016717:Sphincterotomy, Endoscopic / Q000009:adverse effects*