NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 40,2007, Pages 2811-2813, doi:10.3760/j.issn:0376-2491.2007.40.002
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 13, Issue 40,2007, Pages 5394-5396,
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 40,2007, Pages 8086-8089, doi:10.3321/j.issn:1673-8225.2007.40.021
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 40,2007, Pages 8090-8094, doi:10.3321/j.issn:1673-8225.2007.40.022
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 11, Issue 40,2007, Pages 8181-8183, doi:10.3321/j.issn:1673-8225.2007.40.047