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WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 38,2008, Pages 5823-5826, doi:10.3748/wjg.14.5823
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 38,2008, Pages 5876-5879, doi:10.3748/wjg.14.5876
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 38,2008, Pages 5907-5912, doi:10.3748/wjg.14.5907
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 38,2008, Pages 5834-5841, doi:10.3748/wjg.14.5834