WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 3,2007, Pages 486-487,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 3,2007, Pages 355-360,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 3,2007, Pages 438-443,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 3,2007, Pages 480-482,