Degenerative Diseases of the Nervous System, Amyotrophic Lateral Sclerosis
Adams & Victors Principles of Neurology, Chp 39, pg 1109, Ropper, A.H.,et al, 2014
Progressive Multifocal Leukoencephalopathy Associated with Human Immunodeficiency Virus Infection
Ann Int Med 107:78-87, Berger,J.R., 1987