3North America Symptomatic Carotid Endarterctomy Trial Collaborators.Beneficial effects of carotid endarteretomy in Symptomatic patients with high grade stenosis[J].N Engl J Med,1991,325(7):445.
5Wong KS,Li H,Lam WW,et al.Progression of middle cerebral artery occlusive disease and its relationship with further vascular events after stroke[J].Stroke,2002,33:532.