WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 36,2008, Pages 5519-5522, doi:10.3748/wjg.14.5519
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 36,2008, Pages 5614-5616,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 36,2008, Pages 5512-5518, doi:10.3748/wjg.14.5512
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 36,2008, Pages 5590-5594, doi:10.3748/wjg.14.5590
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 36,2008, Pages 5504-5507, doi:10.3748/wjg.14.5504