WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 30,2009, Pages 3757-3766, doi:10.3748/wjg.15.3757
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WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 30,2009, Pages 3834-3835, doi:10.3748/wjg.15.3834
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 30,2009, Pages 3793-3798, doi:10.3748/wjg.15.3793
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 30,2009, Pages 3817-3818, doi:10.3748/wjg.15.3817