[Observations on perforation of biliary calculi into the duodenum].
D001658:Biliary Fistula; D002769:Cholelithiasis; D004386:Duodenum; D042882:Gallstones; D006801:Humans; D007412:Intestinal Fistula
BILIARY FISTULA; CHOLELITHIASIS; INTESTINAL FISTULA