WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 19,2007, Pages 2675-2683,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 19,2007, Pages 2743-2746,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 19,2007, Pages 2655-2668,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 19,2007, Pages 2727-2732,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 19,2007, Pages 2707-2716,