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