WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 14,2008, Pages 2270-2271, doi:10.3748/wjg.14.2270
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 14,2008, Pages 2230-2234, doi:10.3748/wjg.14.2230
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 14,2008, Pages 2272-2276, doi:10.3748/wjg.14.2272
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 14,2008, Pages 2292,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 14,2008, Pages 2255-2261, doi:10.3748/wjg.14.2255