WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 32,2006, Pages 5101-5107,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 32,2006, Pages 5240-5243,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 32,2006, Pages 5201-5204,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 32,2006, Pages 5196-5200,