title: Social factors in mental retardation.
mesh_terms: D004812:Epidemiologic Methods; D005060:Europe; D005190:Family; D006801:Humans; D008607:Intellectual Disability / Q000453:epidemiology / Q000534:rehabilitation; D007398:Interpersonal Relations; D012917:Social Adjustment; D012919:Social Behavior; D012923:Social Class; D012931:Social Environment; D012960:Socioenvironmental Therapy; D014481:United States