http://reply.papertrans.cn/2/186/18542/18542-31.png
http://reply.papertrans.cn/2/186/18542/18542-32.png
Submitted on: 30 April 2010.
Revised on: 31 May 2010.
Accepted on: 27 July 2010.
___________________JOURNAL OF PAIN---CHURCHILL LIVINGSTONE
http://reply.papertrans.cn/2/186/18542/18542-34.png
Submitted on: 20 August 2002.
Revised on: 11 October 2002.
Accepted on: 30 October 2002.
___________________JOURNAL OF PAIN---CHURCHILL LIVINGSTONE
http://reply.papertrans.cn/2/186/18542/18542-36.png