http://reply.papertrans.cn/2/177/17628/17628-31.png
http://reply.papertrans.cn/2/177/17628/17628-32.png
Submitted on: 04 November 2008.
Revised on: 09 December 2008.
Accepted on: 30 January 2009.
___________________JOURNAL OF LARYNGOLOGY AND OTOLOGY
http://reply.papertrans.cn/2/177/17628/17628-34.png
http://reply.papertrans.cn/2/177/17628/17628-35.png
Submitted on: 05 September 2003.
Revised on: 19 December 2003.
Accepted on: 05 January 2004.
___________________JOURNAL OF LARYNGOLOGY AND OTOLOGY