title: Three large-scale clinical trials of aspirin in the USA.
mesh_terms: D000328:Adult; D000368:Aged; D001241:Aspirin / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004176:Dipyridamole / Q000627:therapeutic use; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000517:prevention & control*
chemical_list: D004176:Dipyridamole; D001241:Aspirin