WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 42,2008, Pages 6546-6550, doi:10.3748/wjg.14.6546
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 42,2008, Pages 6444-6452, doi:10.3748/wjg.14.6444
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 42,2008, Pages 6473-6480, doi:10.3748/wjg.14.6473
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 42,2008, Pages 6513-6517, doi:10.3748/wjg.14.6513
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 42,2008, Pages 6442-6443, doi:10.3748/wjg.14.6442