National Medical Journal of China, Volume 93, Issue 29,2013, Pages 2271-2274, doi:10.3760/cma.j.issn.0376-2491.2013.29.008
National Medical Journal of China, Volume 93, Issue 29,2013, Pages 2321-2323, doi:10.3760/cma.j.issn.0376-2491.2013.29.021
National Medical Journal of China, Volume 93, Issue 29,2013, Pages 2262-2263, doi:10.3760/cma.j.issn.0376-2491.2013.29.004
National Medical Journal of China, Volume 93, Issue 29,2013, Pages 2259-2261, doi:10.3760/cma.j.issn.0376-2491.2013.29.002
National Medical Journal of China, Volume 93, Issue 29,2013, Pages 2279-2282, doi:10.3760/cma.j.issn.0376-2491.2013.29.010