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Pre- and postoperative hearing results. Postoperatively, the mean hearing gain was 27.0±14.9 dB. If surgery was done before 10 days after surgery (case A-F, solid line), serviceable hearing was achieved in 4 out of 7 (57.1%) compared to 1 out of 3 (33.3%) after 10 days after surgery (case G-I, dotted line).
