title: Prevalence of autism in early 1970s may have been underestimated.
authors.forename: H
authors.initials: H
authors.lastname: Heussler
authors.forename: L
authors.initials: L
authors.lastname: Polnay
authors.forename: E
authors.initials: E
authors.lastname: Marder
authors.forename: P
authors.initials: P
authors.lastname: Standen
authors.forename: L U
authors.initials: LU
authors.lastname: Chin
authors.forename: N
authors.initials: N
authors.lastname: Butler
mesh_terms: D001321:Autistic Disorder / Q000453:epidemiology*; D002675:Child, Preschool; D015331:Cohort Studies; D006801:Humans; D015995:Prevalence; D006113:United Kingdom / Q000453:epidemiology