After following up from 6 months to 14 years,the hearing level was increased over 15 dB in 426 ears(80 7%). Histological observation was taken for cartilage column which was (80 7%).
英
美
- 528 耳术后经6 个月至14 年随访, 听力提高15dB以上的有426 耳, 占80-7%25 。