WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 32,2007, Pages 4316-4320,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 32,2007, Pages 4385-4390,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 32,2007, Pages 4306-4309,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 32,2007, Pages 4295-4305,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 32,2007, Pages 4398-4440,