WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 24,2007, Pages 3388-3391,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 24,2007, Pages 3342-3349,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 24,2007, Pages 3400,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 24,2007, Pages 3384-3387,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 24,2007, Pages 3359-3363,