WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 13,2007, Pages 1906-1911,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 13,2007, Pages 1912-1927,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 13,2007, Pages 1934-1937,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 13,2007, Pages 1893-1896,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 13,2007, Pages 1947-1952,