Congenital malformations and middle ear surgery.
D002648:Child; D004424:Ear Canal / Q000002:abnormalities; D004429:Ear Ossicles / Q000002:abnormalities; D004432:Ear, Middle / Q000002:abnormalities* / Q000601:surgery; D005154:Facial Nerve / Q000002:abnormalities; D006801:Humans; D008722:Methods