Behavioral/emotional problems in mentally retarded children and youth.
D000293:Adolescent; D000328:Adult; D000342:Affective Symptoms / Q000523:psychology*; D002648:Child; D002653:Child Behavior Disorders / Q000523:psychology*; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000523:psychology*; D007360:Intelligence