WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 16,2007, Pages 2328-2332,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 16,2007, Pages 2344-2348,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 16,2007, Pages 2390-2391,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 16,2007, Pages 2319-2323,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 16,2007, Pages 2283-2288,