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Submitted on: 15 March 2003.
Revised on: 13 April 2003.
Accepted on: 13 May 2003.
___________________Hepatology International---SPRINGER
Submitted on: 28 November 2007.
Revised on: 07 March 2008.
Accepted on: 22 April 2008.
___________________Hepatology International---SPRINGER
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