WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 16,2009, Pages 1977-1984, doi:10.3748/wjg.15.1977
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 16,2009, Pages 1934-1942, doi:10.3748/wjg.15.1934
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 16,2009, Pages 1958-1965, doi:10.3748/wjg.15.1958
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 16,2009, Pages 1990-1998, doi:10.3748/wjg.15.1990
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 16,2009, Pages 2005-2008, doi:10.3748/wjg.15.2005