National Medical Journal of China, Volume 92, Issue 32,2012, Pages 2268-2270, doi:10.3760/cma.j.issn.0376-2491.2012.32.011
National Medical Journal of China, Volume 92, Issue 32,2012, Pages 2233-2234, doi:10.3760/cma.j.issn.0376-2491.2012.32.001
National Medical Journal of China, Volume 92, Issue 32,2012, Pages 2300, doi:10.3760/cma.j.issn.0376-2491.2012.32.021
National Medical Journal of China, Volume 92, Issue 32,2012, Pages 2295-2297, doi:10.3760/cma.j.issn.0376-2491.2012.32.019
National Medical Journal of China, Volume 92, Issue 32,2012, Pages 2292-2294, doi:10.3760/cma.j.issn.0376-2491.2012.32.018