WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 20,2006, Pages 3196-3203,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 20,2006, Pages 3219-3224,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 20,2006, Pages 3204-3212,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 20,2006, Pages 3288-3291,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 12, Issue 20,2006, Pages 3229-3236,