WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 22,2009, Pages 2701-2707, doi:10.3748/wjg.15.2701
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 22,2009, Pages 2731-2738, doi:10.3748/wjg.15.2731
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 22,2009, Pages 2809-2811, doi:10.3748/wjg.15.2809
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 22,2009, Pages 2782-2786, doi:10.3748/wjg.15.2782
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 22,2009, Pages 2714-2722, doi:10.3748/wjg.15.2714