WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 7,2007, Pages 997-1002,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 7,2007, Pages 1108-1111,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 7,2007, Pages 1144,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 7,2007, Pages 1027-1031,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 7,2007, Pages 985-992,