WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 40,2009, Pages 5080-5085, doi:10.3748/wjg.15.5080
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 40,2009, Pages 5109-5111, doi:10.3748/wjg.15.5109
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 40,2009, Pages 5116,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 40,2009, Pages 5053-5057, doi:10.3748/wjg.15.5053
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 40,2009, Pages 5067-5073, doi:10.3748/wjg.15.5067