WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 45,2008, Pages 6943-6947, doi:10.3748/wjg. 14.6943
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 45,2008, Pages 3192-3194, doi:10.3321/j.issn:0376-2491.2008.45.006
SHANDONG MEDICAL JOURNAL, Volume 48, Issue 45,2008, Pages 43-44, doi:10.3969/j.issn.1002-266X.2008.45.018
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH, Volume 12, Issue 45,2008, Pages 8872-8876, doi:10.3321/j.issn:1673-8225.2008.45.031
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 14, Issue 45,2008, Pages 7012-7015, doi:10.3748/wjg. 14.7012