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Submitted on: 23 April 2013.
Revised on: 24 June 2013.
Accepted on: 20 July 2013.
___________________GASTROENTEROLOGY CLINICS OF NORTH AMERICA
Submitted on: 22 March 2014.
Revised on: 12 July 2014.
Accepted on: 30 August 2014.
___________________GASTROENTEROLOGY CLINICS OF NORTH AMERICA
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Submitted on: 12 October 2004.
Revised on: 10 December 2004.
Accepted on: 31 January 2005.
___________________GASTROENTEROLOGY CLINICS OF NORTH AMERICA
Submitted on: 10 February 2020.
Revised on: 26 May 2020.
Accepted on: 22 July 2020.
___________________GASTROENTEROLOGY CLINICS OF NORTH AMERICA
Submitted on: 13 July 2004.
Revised on: 24 September 2004.
Accepted on: 21 November 2004.
___________________GASTROENTEROLOGY CLINICS OF NORTH AMERICA
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