Carotid endarterectomy: does it work?

Adult Aged Canada Carotid Arteries/surgery Carotid Artery Diseases/complications,diagnosis,surgery Cerebrovascular Disorders/prevention & control Clinical Trials as Topic Constriction, Pathologic Endarterectomy/adverse effects,mortality England Follow-Up Studies Humans Ischemic Attack, Transient/etiology,surgery Middle Aged Random Allocation Risk Time Factors United States Wales