WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 40,2007, Pages 5394-5396,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 40,2007, Pages 5336-5342,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 40,2007, Pages 5403-5407,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 40,2007, Pages 5331-5335,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 40,2007, Pages 5408-5410,