WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 42,2006, Pages 6874-6878,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 42,2006, Pages 6879-6883,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 42,2006, Pages 6771-6778,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 42,2006, Pages 6779-6785,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 42,2006, Pages 6806-6811,