Diagnostic classification of the aetiology of mental retardation in children.
D000015:Abnormalities, Multiple / Q000150:complications; D000465:Algorithms; D002490:Central Nervous System / Q000002:abnormalities; D002493:Central Nervous System Diseases / Q000150:complications; D002648:Child; D004781:Environmental Exposure; D006801:Humans; D007239:Infections / Q000150:complications / Q000151:congenital; D008607:Intellectual Disability / Q000145:classification / Q000175:diagnosis / Q000209:etiology*