WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 24,2006, Pages 3906-3910,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 24,2006, Pages 3854-3858,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 24,2006, Pages 3901-3905,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 24,2006, Pages 3793-3802,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 24,2006, Pages 3924-3928,