WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 26,2006, Pages 4264-4266,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 26,2006, Pages 4199-4202,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 26,2006, Pages 4270-4272,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 26,2006, Pages 4246-4249,