title: The clinical status of unmixed types of primary lateral sclerosis after 24 years of observation (subacute degeneration).
authors.forename: A
authors.initials: A
authors.lastname: GORDON
mesh_terms: D000690:Amyotrophic Lateral Sclerosis; D006801:Humans; D016472:Motor Neuron Disease; D012598:Sclerosis
keywords: SCLEROSIS/amyotrophic lateral