Re-operation after failure of surgery for chronic ears.
D001424:Bacterial Infections / Q000209:etiology; D002781:Cholesteatoma / Q000601:surgery; D002908:Chronic Disease; D005069:Evaluation Studies as Topic; D006309:Hearing / Q000502:physiology; D006801:Humans; D009225:Myringoplasty; D010033:Otitis Media / Q000601:surgery*; D011183:Postoperative Complications / Q000601:surgery; D012086:Reoperation; D013997:Time Factors; D014433:Tympanoplasty