1Beneficial effect of carotid endarterectomy in symptomatic patients with high-grade stenosis[J].N Engl J Med,1991,325(3)∶445-453.
2Bastounis E,Filis K,Georgopoulos S,et al,Current practice-routine use of shunting in carotid endarterectomy.Cost reduction and surgical training[J].Int Angiol,2001,20(3)∶218-224.