title: Age at onset of amyotrophic lateral sclerosis is proportional to life expectancy.
authors.affiliation: Department of Neurology, Trinity College , Dublin , Ireland.
authors.forename: Susan
authors.initials: S
authors.lastname: Byrne
authors.forename: Iain
authors.initials: I
authors.lastname: Jordan
authors.forename: Marwa
authors.initials: M
authors.lastname: Elamin
authors.forename: Orla
authors.initials: O
authors.lastname: Hardiman
mesh_terms: D017668:Age of Onset; D000368:Aged; D000690:Amyotrophic Lateral Sclerosis / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008017:Life Expectancy / Q000639:trends*; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance / Q000379:methods*; D011446:Prospective Studies; D012189:Retrospective Studies