the 772 patients were randomized to receive either aspirin ( 325 mg once a day ) , aspirin ( 325 mg three times a day ) , aspirin plus dipyridamole ( 325 and 75 mg together three times a day ) ( aspirin group ) , sulfinpyrazone ( 267 mg three times a day ) or placebo ( nonaspirin group ) .
C0732279
aspirin
C0004057
aspirin