WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 26,2008, Pages 4120-4126,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 26,2008, Pages 4253-4256,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 26,2008, Pages 4234-4237,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 26,2008, Pages 4101-4110,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 26,2008, Pages 4137-4141,