WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 31,2005, Pages 4800-4806,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 31,2005, Pages 4812-4814,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 31,2005, Pages 4869-4874,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 31,2005, Pages 4930,