WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 6,2008, Pages 931-935, doi:10.3748/wjg.14.931
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 6,2008, Pages 876-883, doi:10.3748/wjg.14.876
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 6,2008, Pages 948-950, doi:10.3748/wjg.14.948
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 6,2008, Pages 821-827, doi:10.3748/wjg.14.821
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 6,2008, Pages 951-953, doi:10.3748/wjg.14.951