WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 22,2007, Pages 3033-3042,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 22,2007, Pages 3031-3032,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 22,2007, Pages 3101-3105,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 22,2007, Pages 3122-3127,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 22,2007, Pages 3141-3143,