WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 35,2009, Pages 4471-4475, doi:10.3748/wjg.15.4471
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 35,2009, Pages 4439-4443, doi:10.3748/wjg.15.4439
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 35,2009, Pages 4464-4466, doi:10.3748/wjg.15.4464
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 35,2009, Pages 4372-4379, doi:10.3748/wjg.15.4372
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 35,2009, Pages 4353-4355, doi:10.3748/wjg.15.4353