JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 38,2007, Pages 7661-7664, doi:10.3321/j.issn:1673-8225.2007.38.019
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2710-2713, doi:10.3760/j.issn:0376-2491.2007.38.012
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 38,2007, Pages 5101-5107,
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 38,2007, Pages 7541-7544, doi:10.3321/j.issn:1673-8225.2007.38.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2672-2676, doi:10.3760/j.issn:0376-2491.2007.38.003