Submitted on: 01 May 2005.
Revised on: 25 June 2005.
Accepted on: 12 August 2005.
___________________Healthcare---MDPI
Submitted on: 18 January 2013.
Revised on: 16 February 2013.
Accepted on: 11 April 2013.
___________________Healthcare---MDPI
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http://reply.papertrans.cn/2/112/11158/11158-24.png
Submitted on: 10 August 2007.
Revised on: 30 September 2007.
Accepted on: 05 November 2007.
___________________Healthcare---MDPI
http://reply.papertrans.cn/2/112/11158/11158-26.png
http://reply.papertrans.cn/2/112/11158/11158-27.png
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http://reply.papertrans.cn/2/112/11158/11158-29.png
Submitted on: 12 June 2006.
Revised on: 20 August 2006.
Accepted on: 14 September 2006.
___________________Healthcare---MDPI