WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 48,2008, Pages 7400,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 48,2008, Pages 7329-7334, doi:10.3748/wjg.14.7329
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 48,2008, Pages 7376-7380, doi:10.3748/wjg.14.7376
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 48,2008, Pages 7392-7396, doi:10.3748/wjg.14.7392