National Medical Journal of China, Volume 92, Issue 40,2012, Pages 2878, doi:10.3760/cma.j.issn.0376-2491.2012.40.022
National Medical Journal of China, Volume 92, Issue 40,2012, Pages 2811-2813, doi:10.3760/cma.j.issn.0376-2491.2012.40.002
National Medical Journal of China, Volume 92, Issue 40,2012, Pages 2839-2842, doi:10.3760/cma.j.issn.0376-2491.2012.40.010
National Medical Journal of China, Volume 92, Issue 40,2012, Pages 2865-2867, doi:10.3760/cma.j.issn.0376-2491.2012.40.017
National Medical Journal of China, Volume 92, Issue 40,2012, Pages 2816-2819, doi:10.3760/cma.j.issn.0376-2491.2012.40.004