Nystagmus of Pelizaeus-Merzbacher Disease
Arch Neurol 48:87-91, Trobe,J.D.,et al, 1991
Primary Position Vertical Nystagmus & Cerebellar Ataxia
Arch Neurol 40:310-314, Kattah,J.C.,et al, 1983
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JNNP 37:570, Aschoff,J.C.,et al, 1974