title: EC/IC Bypass Study.
mesh_terms: D002548:Cerebral Revascularization; D002560:Cerebrovascular Circulation; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D002546:Ischemic Attack, Transient / Q000601:surgery; D008297:Male; D011897:Random Allocation; D012306:Risk