WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 15,2005, Pages 2324-2329,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 15,2005, Pages 2334-2336,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 15,2005, Pages 2370,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 15,2005, Pages 2340-2345,