WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 3,2008, Pages 484-486, doi:10.3748/wjg.14.484
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 3,2008, Pages 474-478, doi:10.3748/wjg.14.474
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 3,2008, Pages 338-347, doi:10.3748/wjg.14.338
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 3,2008, Pages 448-453, doi:10.3748/wjg.14.448
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 3,2008, Pages 390-400, doi:10.3748/wjg.14.390