WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 10,2006, Pages 1617-1620,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 10,2006, Pages 1637-1640,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 10,2006, Pages 1577-1582,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 10,2006, Pages 1558-1568,