Current concepts of chronic attic and middle ear disease; new surgical technique to preserve hearing.
D004432:Ear, Middle; D006801:Humans; D008416:Mastoid; D010033:Otitis Media / Q000150:complications*; D014432:Tympanic Membrane; D018058:Tympanic Membrane Perforation
OTITIS MEDIA/complications; TYMPANIC MEMBRANE/perforation