Effect on hearing thresholds of surgical modification of the external ear.
D001309:Auditory Threshold; D004424:Ear Canal / Q000601:surgery*; D004431:Ear, External / Q000601:surgery*; D004432:Ear, Middle / Q000601:surgery; D006801:Humans; D008416:Mastoid / Q000601:surgery; D008953:Models, Anatomic; D014432:Tympanic Membrane / Q000601:surgery