Chronic suppurative otitis media in Hong Kong.
D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005260:Female; D006723:Hong Kong; D006801:Humans; D008297:Male; D008722:Methods; D010033:Otitis Media / Q000601:surgery*; D010035:Otitis Media, Suppurative / Q000453:epidemiology / Q000601:surgery*; D012959:Socioeconomic Factors