title: Pervasive developmental disorders in young children.
authors: S L
authors: SL
authors: Hyman
authors: P M
authors: PM
authors: Rodier
authors: P
authors: P
authors: Davidson
mesh_terms: D001321:Autistic Disorder / Q000453:epidemiology; D002648:Child; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis / Q000453:epidemiology*; D002675:Child, Preschool; D006801:Humans; D015995:Prevalence; D006113:United Kingdom / Q000453:epidemiology