Submitted on: 08 September 2001.
Revised on: 07 November 2001.
Accepted on: 11 December 2001.
___________________Intensive Care Medicine Experimental
Submitted on: 23 January 2006.
Revised on: 15 March 2006.
Accepted on: 07 April 2006.
___________________Intensive Care Medicine Experimental
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Submitted on: 06 November 2007.
Revised on: 15 January 2008.
Accepted on: 18 February 2008.
___________________Intensive Care Medicine Experimental
Submitted on: 30 January 2002.
Revised on: 14 May 2002.
Accepted on: 09 July 2002.
___________________Intensive Care Medicine Experimental
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