WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 30,2006, Pages 4911-4913,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 30,2006, Pages 4866-4869,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 30,2006, Pages 4773-4783,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 30,2006, Pages 4922-4926,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 30,2006, Pages 4873-4874,