WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 18,2008, Pages 2900-2904, doi:10.3748/wjg.14.2900
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 18,2008, Pages 2915-2916, doi:10.3748/wjg.14.2915
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 18,2008, Pages 2789-2793, doi:10.3748/wjg.14.2789
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 18,2008, Pages 2851-2857, doi:10.3748/wjg.14.2851
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 18,2008, Pages 2917-2919, doi:10.3748/wjg.14.2917