WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 40,2006, Pages 6551-6555,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 40,2006, Pages 6458-6463,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 40,2006, Pages 6446-6452,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 40,2006, Pages 6567-6571,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 40,2006, Pages 6531-6535,