WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 16,2004, Pages 2409-2411,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 16,2004, Pages 2330-2333,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 16,2004, Pages 2361-2368,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 16,2004, Pages 2369-2372,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 16,2004, Pages 2394-2396,