Degenerative Diseases of the Nervous System, Amyotrophic Lateral SclerosisAdams & Victors Principles of Neurology, Chp 39, pg 1109, Ropper, A.H.,et al, 2014
Subacute, Reversible Motor Neuron DiseaseNeurol 41:1541-1544, Tucker,T.,et al, 1991