WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 14,2006, Pages 2276-2279,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 14,2006, Pages 2239-2242,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 14,2006, Pages 2161-2167,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 14,2006, Pages 2187-2194,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 14,2006, Pages 2229-2234,