WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 25,2005, Pages 3877-3881,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 25,2005, Pages 3931-3934,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 25,2005, Pages 3925-3930,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 25,2005, Pages 3915-3919,