604 patients with atherothrombotic cerebral ischemic events ( transient , 16 % : or completed , 84 % ) referrable either to the carotid or to the vertebral-basilar circulation were entered into a double blind randomized clinical trial ( aicla ) to determine whether aspirin ( a ) ( 1 g/day ) or aspirin ( 1 g/day ) + dipyridamole ( 225 mg/day ) ( ad ) would produce a significant reduction in the subsequent ( 3 years ) occurrence of fatal and nonfatal cerebral infarction .
C0004057
aspirin
C0007785
cerebral infarction