WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 14,2009, Pages 1677-1689, doi:10.3748/wjg.15.1677
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 14,2009, Pages 1744-1750, doi:10.3748/wjg.15.1744
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 14,2009, Pages 1708-1718, doi:10.3748/wjg.15.1708
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 14,2009, Pages 1786-1787, doi:10.3748/wjg.15.1786
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 14,2009, Pages 1730-1737, doi:10.3748/wjg.15.1730