The attack on the tympanic membrane.
D006296:Health Services / Q000639:trends*; D006300:Health Services Misuse / Q000639:trends*; D006801:Humans; D008876:Middle Ear Ventilation; D010033:Otitis Media / Q000601:surgery*; D010034:Otitis Media with Effusion / Q000601:surgery*; D014432:Tympanic Membrane / Q000601:surgery; D014481:United States