Results of a field epidemiologic study.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000453:epidemiology*; D008297:Male; D008722:Methods; D012423:Rural Health; D014481:United States