Acoustic impedance measurements with hard of hearing mentally retarded children.
D000293:Adolescent; D001299:Audiometry; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004432:Ear, Middle / Q000503:physiopathology; D004548:Elasticity; D005260:Female; D006311:Hearing Disorders / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D008297:Male; D012018:Reflex