WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 3,2001, Pages 387-388,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 3,2001, Pages 335-339,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 3,2001, Pages 303-307,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 3,2001, Pages 389-393,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 3,2001, Pages 381-386,