"Salt and Pepper" in the Eye and Face: A Prelude to Brainstem Ischemia
Am J Ophthalmol 144:322-325, Conforto, A.B.,et al, 2007
Vertebrobasilar Disease
NEJM 352:2618-2626, Savitz,S.I.&Caplan,L.R., 2005
Pure Midbrain Infarction:Clinical Syndromes, MRI, and Etiologic Patterns
Neurol 44:2032-2040, Bogousslavsky,J.,et al, 1994