WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 34,2009, Pages 4305-4310, doi:10.3748/wjg.15.4305
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 34,2009, Pages 4343-4345, doi:10.3748/wjg.15.4343
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 34,2009, Pages 4350-4352,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 34,2009, Pages 4311-4315, doi:10.3748/wjg.15.4311
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 34,2009, Pages 4225-4233, doi:10.3748/wjg.15.4225