National Medical Journal of China, Volume 92, Issue 37,2012, Pages 2641-2644, doi:10.3760/cma.j.issn.0376-2491.2012.37.013
National Medical Journal of China, Volume 92, Issue 37,2012, Pages 2593-2594, doi:10.3760/cma.j.issn.0376-2491.2012.37.001
National Medical Journal of China, Volume 92, Issue 37,2012, Pages 2660-2663, doi:10.3760/cma.j.issn.0376-2491.2012.37.018
National Medical Journal of China, Volume 92, Issue 37,2012, Pages 2645-2648, doi:10.3760/cma.j.issn.0376-2491.2012.37.014
National Medical Journal of China, Volume 92, Issue 37,2012, Pages 2611-2614, doi:10.3760/cma.j.issn.0376-2491.2012.37.006