[Attempt at the classification of sanitizing ear surgery].
D004427:Ear Diseases / Q000601:surgery; D006801:Humans; D008416:Mastoid / Q000601:surgery*; D008443:Maxillary Sinus / Q000601:surgery*; D008722:Methods; D014433:Tympanoplasty
Klassifikationsversuch der sanierenden Ohroperationen.