WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 34,2007, Pages 4630-4635,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 34,2007, Pages 4539-4550,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 34,2007, Pages 4610-4614,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 34,2007, Pages 4574-4578,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 34,2007, Pages 4636-4640,