Relative impedance measurements in young children.
D000367:Age Factors; D001299:Audiometry; D001309:Auditory Threshold; D002675:Child, Preschool; D004432:Ear, Middle / Q000502:physiology; D006309:Hearing / Q000502:physiology*; D006801:Humans; D007223:Infant; D008722:Methods; D009132:Muscles / Q000502:physiology; D012018:Reflex / Q000502:physiology