The epidemiology of mental handicap.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001720:Birth Injuries / Q000150:complications; D002648:Child; D004314:Down Syndrome; D004495:Education of Persons with Intellectual Disabilities; D006275:Health Facility Planning; D006801:Humans; D007239:Infections / Q000150:complications; D008607:Intellectual Disability / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D007361:Intelligence Tests; D008605:Mental Health Services; D008661:Metabolism, Inborn Errors / Q000150:complications; D011159:Population Surveillance; D006113:United Kingdom