Classification of chronic suppurative otitis media: type IV.
Deguine
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D018424:Cholesteatoma, Middle Ear / Q000209:etiology*; D002908:Chronic Disease; D003937:Diagnosis, Differential; D006801:Humans; D010035:Otitis Media, Suppurative / Q000145:classification* / Q000150:complications* / Q000601:surgery