Submitted on: 20 July 2010.
Revised on: 20 September 2010.
Accepted on: 05 October 2010.
___________________Biomedical Journal---ELSEVIER
Submitted on: 22 February 2006.
Revised on: 22 May 2006.
Accepted on: 29 June 2006.
___________________Biomedical Journal---ELSEVIER
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http://reply.papertrans.cn/1/37/3670/3670-34.png
Submitted on: 11 November 1998.
Revised on: 31 December 1998.
Accepted on: 15 January 1999.
___________________Biomedical Journal---ELSEVIER
Submitted on: 16 September 2009.
Revised on: 21 December 2009.
Accepted on: 18 February 2010.
___________________Biomedical Journal---ELSEVIER