Degenerative Diseases of the Nervous System, Amyotrophic Lateral SclerosisAdams & Victors Principles of Neurology, Chp 39, pg 1109, Ropper, A.H.,et al, 2014
Clinicopath ConfProgressive Muscular Atrophy, Case 36-1995, NEJM 333:1406-1412995., , 1995