The use of operative choledochoscope.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001653:Bile Ducts, Intrahepatic; D002758:Cholangiography; D002769:Cholelithiasis / Q000175:diagnosis / Q000601:surgery*; D003135:Common Bile Duct; D004724:Endoscopy; D005260:Female; D042882:Gallstones / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged