title: Acoustic impedance and tympanometry with the retarded: a normative study.
mesh_terms: D000293:Adolescent; D000328:Adult; D001274:Atmospheric Pressure; D001299:Audiometry; D001309:Auditory Threshold; D002648:Child; D004424:Ear Canal / Q000502:physiology; D004429:Ear Ossicles / Q000502:physiology; D004548:Elasticity; D004594:Electrophysiology; D006801:Humans; D008607:Intellectual Disability; D008722:Methods; D009132:Muscles / Q000502:physiology; D012018:Reflex; D014432:Tympanic Membrane / Q000502:physiology*