WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 1,2001, Pages 42-48,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 1,2001, Pages 93-97,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 1,2001, Pages 102-106,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 1,2001, Pages 37-41,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 1,2001, Pages 74-79,