in a multicenter clinical trial on the prevention of recurrent myocardial infarction , 946 patients who had survived a myocardial infarction for 30-42 days were randomly allocated to acetylsalicylic acid ( asa , 1.5 g/day ) ( 317 patients ) , placebo ( 309 patients ) or phenprocoumon treatment ( 320 patients ) and were followed to determine the incidence of total mortality , coronary death and nonfatal recurrent myocardial infarction .
C0027051
myocardial infarction
C0004057
asa