[Study of facial nerve exposure during ear surgery].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002781:Cholesteatoma / Q000601:surgery; D004423:Ear / Q000601:surgery*; D004428:Ear Neoplasms / Q000601:surgery; D005154:Facial Nerve; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors