WORLD JOURNAL OF GASTROENTEROLOGY, Volume 6, Issue 2,2000, Pages 187-192,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 6, Issue 2,2000, Pages 248-251,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 6, Issue 2,2000, Pages 210-215,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 6, Issue 2,2000, Pages 228-230,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 6, Issue 2,2000, Pages 281-283,