WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 36,2009, Pages 4518-4528, doi:10.3748/wjg.15.4518
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 36,2009, Pages 4511-4517, doi:10.3748/wjg.15.4511
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 36,2009, Pages 4576-4581, doi:10.3748/wjg.15.4576
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 36,2009, Pages 4582-4586, doi:10.3748/wjg.15.4582
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 36,2009, Pages 4529-4537, doi:10.3748/wjg.15.4529