title: Ethnic variation in the incidence of ALS: a systematic review.
authors: Joe Jacob
authors: JJ
authors: Alappat
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000453:epidemiology / Q000208:ethnology*; D005006:Ethnicity / Q000208:ethnology*; D006801:Humans; D015994:Incidence; D012196:Review Literature as Topic