The incidence of bilateral chronic otitis media.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002781:Cholesteatoma / Q000453:epidemiology; D002908:Chronic Disease; D004427:Ear Diseases / Q000453:epidemiology; D005260:Female; D006801:Humans; D008131:London; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000453:epidemiology*