WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 27,2009, Pages 3440-3444, doi:10.3748/wjg.15.3440
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 27,2009, Pages 3448-3450, doi:10.3748/wjg.15.3448
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 27,2009, Pages 3451, doi:10.3748/wjg.15.3451
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 27,2009, Pages 3434-3436, doi:10.3748/wjg.15.3434
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 27,2009, Pages 3349-3354, doi:10.3748/wjg.15.3349