title: Preliminary report: Findings from the aspirin component of the ongoing Physicians' Health Study.
mesh_terms: D000328:Adult; D000368:Aged; D001241:Aspirin / Q000008:administration & dosage / Q000627:therapeutic use*; D002318:Cardiovascular Diseases / Q000517:prevention & control*; D002338:Carotenoids / Q000627:therapeutic use; D002561:Cerebrovascular Disorders / Q000517:prevention & control; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000517:prevention & control; D009369:Neoplasms / Q000517:prevention & control; D011897:Random Allocation; D019207:beta Carotene
chemical_list: D019207:beta Carotene; D002338:Carotenoids; D001241:Aspirin