WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 45,2009, Pages 5758-5760,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 45,2009, Pages 5633-5640, doi:10.3748/wjg.15.5633
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 45,2009, Pages 5754-5755, doi:10.3748/wjg.15.5754
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 45,2009, Pages 5727-5731, doi:10.3748/wjg.15.5727
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 45,2009, Pages 5674-5684, doi:10.3748/wjg.15.5674