title: [Various epidemiological aspects of mental subnormality].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004739:England; D004777:Environment; D005260:Female; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000453:epidemiology*; D008297:Male; D008800:Mexico; D012959:Socioeconomic Factors; D014481:United States
vernacular_title: Algunos aspectos epidemiológicos de la subnormalidad mental.