Vertebrobasilar Disease
NEJM 352:2618-2626, Savitz,S.I.&Caplan,L.R., 2005
Spontaneous Dissection of the Carotid and Vertebral Arteries
NEJM 344:898-906, Schievink,W.I., 2001
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Stroke 30:2073-2085, Malek,A.M.,et al, 1999