Biliary tract endoscopy with an improved choledochofiberscope.
D000328:Adult; D002758:Cholangiography / Q000295:instrumentation; D002769:Cholelithiasis / Q000601:surgery; D003135:Common Bile Duct; D019723:Endoscopes; D005336:Fiber Optic Technology / Q000295:instrumentation; D006801:Humans; D008297:Male