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Submitted on: 30 March 2007.
Revised on: 06 June 2007.
Accepted on: 03 August 2007.
___________________Innovation---CELL PRESS
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Submitted on: 23 July 2012.
Revised on: 31 August 2012.
Accepted on: 06 October 2012.
___________________Innovation---CELL PRESS
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Submitted on: 28 December 2004.
Revised on: 07 April 2005.
Accepted on: 24 May 2005.
___________________Innovation---CELL PRESS
http://reply.papertrans.cn/2/127/12650/12650-29.png
Submitted on: 07 December 2012.
Revised on: 16 March 2013.
Accepted on: 26 April 2013.
___________________Innovation---CELL PRESS