title: Diagnostic validity of hospital discharge codes in the ascertainment of amyotrophic lateral sclerosis.
authors.forename: Alvaro
authors.initials: A
authors.lastname: Alonso
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000175:diagnosis*; D005568:Forms and Records Control / Q000592:standards*; D006801:Humans; D010351:Patient Discharge