WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 6,2005, Pages 867-870,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 6,2005, Pages 842-845,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 6,2005, Pages 880-884,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 6,2005, Pages 908-911,