WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 29,2009, Pages 3591-3596, doi:10.3748/wjg.15.3591
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 29,2009, Pages 3603-3610, doi:10.3748/wjg.15.3603
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 29,2009, Pages 3691-3693, doi:10.3748/wjg.15.3691
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 29,2009, Pages 3697-3700, doi:10.3748/wjg.15.3697
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 29,2009, Pages 3684-3686, doi:10.3748/wjg.15.3684