WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 17,2008, Pages 2639-2649, doi:10.3748/wjg.14.2639
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 17,2008, Pages 2631-2638, doi:10.3748/wjg.14.2631
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 17,2008, Pages 2757-2762, doi:10.3748/wjg.14.2757
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 17,2008, Pages 2630, doi:10.3748/wjg.14.2630
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 17,2008, Pages 2670-2677, doi:10.3748/wjg.14.2670