Chronic otitis media in Hong Kong.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005260:Female; D006723:Hong Kong; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery; D008722:Methods; D008875:Middle Aged; D010033:Otitis Media; D014433:Tympanoplasty