NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 46,2007, Pages 3256-3259, doi:10.3760/j.issn:0376-2491.2007.46.005
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 46,2007, Pages 9272-9275, doi:10.3321/j.issn:1673-8225.2007.46.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 46,2007, Pages 3298-3301, doi:10.3760/j.issn:0376-2491.2007.46.016
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6150-6155, doi:10.3748/wjg.13.6150
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 46,2007, Pages 6226-6230, doi:10.3748/wjg.13.6226