title: The National Cooperative Gallstone Study and chenodiol.
mesh_terms: D002635:Chenodeoxycholic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D002763:Cholecystectomy; D002769:Cholelithiasis / Q000188:drug therapy* / Q000601:surgery; D002986:Clinical Trials as Topic; D003365:Costs and Cost Analysis; D005260:Female; D006801:Humans; D008297:Male; D011897:Random Allocation; D012107:Research Design; D014481:United States
chemical_list: D002635:Chenodeoxycholic Acid