WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 8,2007, Pages 1240-1242,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 8,2007, Pages 1310-1312,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 8,2007, Pages 1243-1246,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 8,2007, Pages 1295-1298,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 8,2007, Pages 1262-1267,