7[1]Branett HJ,Taylor DW, Eliasziw M et al. Benefit of carotid endarterectomy in patients with symptomatic moderateor severe stenosis. north american symptomatic carotid endarterectomy trial collaborators[J]. N Engl J Med,1998,339(20):1415-1425.
8[2]Chen WH,Ho DS,Ho SL et al. Prevalence of extracranial carotid and vertebral artery disease in Chinese patients with coronary artery disease[J].Stroke, 1998,29(12):631-634.