National Medical Journal of China, Volume 91, Issue 43,2011, Pages 3028-3029, doi:10.3760/cma.j.issn.0376-2491.2011.43.002
WORLD HEALTH DIGEST, Volume 08, Issue 43,2011, Pages 181-182, doi:10.3969/j.issn.1672-5085.2011.43.156
Shandong Medical Journal, Volume 51, Issue 43,2011, Pages 17-19, doi:10.3969/j.issn.1002-266X.2011.43.009
WORLD HEALTH DIGEST, Volume 08, Issue 43,2011, Pages 353-353, doi:10.3969/j.issn.1672-5085.2011.43.368