Submitted on: 18 January 2008.
Revised on: 19 April 2008.
Accepted on: 11 May 2008.
___________________Expert Review of Gastroenterology & Hepatology
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Submitted on: 29 September 2002.
Revised on: 06 November 2002.
Accepted on: 20 November 2002.
___________________Expert Review of Gastroenterology & Hepatology
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Submitted on: 13 September 2000.
Revised on: 28 October 2000.
Accepted on: 18 December 2000.
___________________Expert Review of Gastroenterology & Hepatology
Submitted on: 04 May 2005.
Revised on: 22 July 2005.
Accepted on: 06 August 2005.
___________________Expert Review of Gastroenterology & Hepatology
Submitted on: 21 July 1998.
Revised on: 29 October 1998.
Accepted on: 21 December 1998.
___________________Expert Review of Gastroenterology & Hepatology
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Submitted on: 28 December 2007.
Revised on: 21 April 2008.
Accepted on: 15 June 2008.
___________________Expert Review of Gastroenterology & Hepatology