WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 47,2007, Pages 6356-6364, doi:10.3748/wjg.13.6356
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 47,2007, Pages 3367-3371, doi:10.3760/j.issn:0376-2491.2007.47.014
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 47,2007, Pages 9487-9490, doi:10.3321/j.issn:1673-8225.2007.47.034
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 47,2007, Pages 6419-6424, doi:10.3748/wjg.13.6419
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 47,2007, Pages 6291-6294, doi:10.3748/wjg.13.6291