WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6166-6171, doi:10.3748/wjg.13.6166
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6127-6133,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6259-6263, doi:10.3748/wjg.13.6259
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6150-6155, doi:10.3748/wjg.13.6150
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6254-6258, doi:10.3748/wjg.13.6254