title: Determining the true prevalence of autistic spectrum disorders.
authors.forename: L
authors.initials: L
authors.lastname: Perera
authors.forename: S
authors.initials: S
authors.lastname: Vijeratnam
authors.forename: E
authors.initials: E
authors.lastname: Bolland
mesh_terms: D001321:Autistic Disorder / Q000175:diagnosis / Q000453:epidemiology*; D002675:Child, Preschool; D006801:Humans; D008485:Medical Audit; D015995:Prevalence; D006113:United Kingdom / Q000453:epidemiology