http://reply.papertrans.cn/3/207/20652/20652-31.png
http://reply.papertrans.cn/3/207/20652/20652-32.png
Submitted on: 19 October 1999.
Revised on: 28 November 1999.
Accepted on: 17 December 1999.
Laryngoscope Investigative Otolaryngology
http://reply.papertrans.cn/3/207/20652/20652-34.png
http://reply.papertrans.cn/3/207/20652/20652-35.png
Submitted on: 13 October 2020.
Revised on: 23 November 2020.
Accepted on: 09 December 2020.
Laryngoscope Investigative Otolaryngology