Diseases of the Nervous System Caused by Nutritional Deficiency, Vitamin B12 (Cobalamin) Deficiency (Subacute Combined Degeneration)
Adams & Victors Principles of Neurology Chp 41, pg 1172, Ropper, A.H.,et al, 2014
Neurosacrcoidosis: Presentations and Management
Neurologist 16:2-15, Terushkin,V.,et al, 2010
Multiple Sclerosis with Predominant, Severe Cognitive Impairment
Arch Neurol 66:1139-1143, Staff,N.,et al, 2009