The National Cooperative Gallstone Study report: a surgeon's perspective.
D002635:Chenodeoxycholic Acid / Q000627:therapeutic use*; D002763:Cholecystectomy / Q000401:mortality; D002769:Cholelithiasis / Q000628:therapy*; D004341:Drug Evaluation; D006801:Humans; D008875:Middle Aged; D012306:Risk
D002635:Chenodeoxycholic Acid