Surgical classification for chronic otitis media.
D000328:Adult; D000367:Age Factors; D002648:Child; D002781:Cholesteatoma; D002908:Chronic Disease; D004427:Ear Diseases; D004432:Ear, Middle; D006801:Humans; D009092:Mucous Membrane; D010033:Otitis Media / Q000145:classification* / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D012421:Rupture; D014432:Tympanic Membrane