WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 19,2009, Pages 2305-2308, doi:10.3748/wjg.15.2305
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 19,2009, Pages 2425-2427, doi:10.3748/wjg.15.2425
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 19,2009, Pages 2395-2400, doi:10.3748/wjg.15.2395
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 19,2009, Pages 2423-2424, doi:10.3748/wjg.15.2423
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 19,2009, Pages 2406-2411, doi:10.3748/wjg.15.2406