WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 7,2004, Pages 1069-1071,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 7,2004, Pages 934-939,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 7,2004, Pages 1000-1004,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 10, Issue 7,2004, Pages 968-971,