title: ALS.
authors.forename: J P
authors.initials: JP
authors.lastname: Gallagher
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000453:epidemiology / Q000209:etiology*; D005538:Football; D006801:Humans; D008297:Male; D008875:Middle Aged; D012495:San Francisco; D013029:Space-Time Clustering; D013177:Sports