title: The prevalence puzzle: Autism counts.
authors: Karen
authors: K
authors: Weintraub
mesh_terms: D001321:Autistic Disorder / Q000175:diagnosis* / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D004777:Environment; D059647:Gene-Environment Interaction; D006801:Humans; D015995:Prevalence; D012307:Risk Factors