Submitted on: 08 September 2009.
Revised on: 27 October 2009.
Accepted on: 02 December 2009.
___________________Interactive Cardiovascular and Thoracic Surgery
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Submitted on: 25 March 2010.
Revised on: 30 April 2010.
Accepted on: 12 June 2010.
___________________Interactive Cardiovascular and Thoracic Surgery
http://reply.papertrans.cn/2/128/12770/12770-34.png
Submitted on: 24 January 2003.
Revised on: 19 April 2003.
Accepted on: 03 May 2003.
___________________Interactive Cardiovascular and Thoracic Surgery
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