Vertebrobasilar Ischemia after Neck Motion
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Wallenberg's Syndrome Following Neck Manipulation
Neurol 40:611-615, Frumkin,L.R.&Baloh,R.W., 1990
Vertebrobasilar Injuries Following Cervical Manipulation
JAMA 244:1450-1453, Schellhas,K.P.,et al, 1980