WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 25,2009, Pages 3114-3121, doi:10.3748/wjg.15.3114
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 25,2009, Pages 3086-3098, doi:10.3748/wjg.15.3086
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 25,2009, Pages 3148-3152, doi:10.3748/wjg.15.3148
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 25,2009, Pages 3122-3127, doi:10.3748/wjg.15.3122
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 25,2009, Pages 3161-3165, doi:10.3748/wjg.15.3161