Disorders of the Nervous System Caused by Drugs, Toxins, and Chemical Agents, Mercury
Adams & Victors Principles of Neurology Chp 43, pg 1223, Ropper, A.H.,et al, 2014
Epidemiology of Motor-Neuron Diseases
NEJM 288:1047, Bobwick,A.R.,et al, 1973
Ataxia In Childhood
Dev Med Child Neurol 10:388-389, Wilson,J., 1968