WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 44,2005, Pages 7040-7043,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 44,2005, Pages 7036-7039,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 44,2005, Pages 7028-7032,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 44,2005, Pages 6988-6994,