Submitted on: 17 November 2003.
Revised on: 20 February 2004.
Accepted on: 29 March 2004.
___________________Interactive Cardiovascular and Thoracic Surgery
Submitted on: 30 October 2009.
Revised on: 23 November 2009.
Accepted on: 03 January 2010.
___________________Interactive Cardiovascular and Thoracic Surgery
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Submitted on: 19 January 1998.
Revised on: 17 February 1998.
Accepted on: 18 March 1998.
___________________Interactive Cardiovascular and Thoracic Surgery
Submitted on: 31 March 2003.
Revised on: 07 May 2003.
Accepted on: 03 June 2003.
___________________Interactive Cardiovascular and Thoracic Surgery
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