WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 35,2007, Pages 4781-4783,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 35,2007, Pages 4669-4672,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 35,2007, Pages 4771-4775,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 35,2007, Pages 4673-4689,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 35,2007, Pages 4788-4790,