WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 39,2009, Pages 4962-4968, doi:10.3748/wjg.15.4962
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 39,2009, Pages 4980-4983, doi:10.3748/wjg.15.4980
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 39,2009, Pages 4928-4931, doi:10.3748/wjg.15.4928
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 39,2009, Pages 4907-4914, doi:10.3748/wjg.15.4907
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 39,2009, Pages 4988,