WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 42,2007, Pages 5594-5597,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 42,2007, Pages 5664-5667,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 42,2007, Pages 5635-5641,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 42,2007, Pages 5577-5580,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 42,2007, Pages 5642-5647,