WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 33,2005, Pages 5239-5240,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 33,2005, Pages 5235-5238,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 33,2005, Pages 5213-5217,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 33,2005, Pages 5185-5192,