title: An improved choledochofiberscope and non-surgical removal of retained biliary calculi under direct visual control.
mesh_terms: D000328:Adult; D000368:Aged; D002769:Cholelithiasis / Q000601:surgery / Q000628:therapy*; D003135:Common Bile Duct; D019723:Endoscopes; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000628:therapy