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Chapter
Mastoid and Middle Ear Surgery
Refractory secretory otitis media, without improvement after conservative treatments, such as antibiotics, eustachian tube inflation or previous tympanostomy alone.
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Chapter
Inner Ear Surgery
Unilateral or bilateral otosclerosis in which the average air-bone gap of four frequencies (500, 1000,2000,4000Hz) is 35 dB or more.