Utilization of Intravenous Tissue-Type Plasminogen Activator for Ischemic Stroke at Academic Medical Centers
Stroke 32:1061-1068, Claiborne Johnston,S.,et al, 2001
Epidemiology of Carotid Endarterectomy and Cerebral Arteriography in the United States
Stroke 26:1724-1728, Gillum,R.F., 1995