Neurologic Aspects of Cobalamin Deficiency
Medicine 70:229-245, Healton,E.B.,et al, 1991
Clinical Correlates of Vascular Parkinsonism
Arch Neurol 56:98-102, Winikates,J.&Jancovic,J., 1999
Demyelinating Diseases
In Rowlands Merritt's Textbk of Neurology, Lea & Febiger, Phila, 8th Ed, p. 749, Sibley,W.A.,et al, 1989