WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 6,2001, Pages 872-875,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 6,2001, Pages 805-810,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 6,2001, Pages 779-782,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 6,2001, Pages 796-800,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 7, Issue 6,2001, Pages 860-863,