The incidence of hearing loss in mentally retarded children.
D002648:Child; D006309:Hearing; D006311:Hearing Disorders / Q000150:complications*; D034381:Hearing Loss; D006320:Hearing Tests; D006801:Humans; D015994:Incidence; D008607:Intellectual Disability / Q000150:complications*; D019989:Persons with Intellectual Disabilities
HEARING DISORDERS/complications; MENTAL DEFICIENCY/complications