National Medical Journal of China, Volume 93, Issue 30,2013, Pages 2359-2363, doi:10.3760/cma.j.issn.0376-2491.2013.30.006
National Medical Journal of China, Volume 93, Issue 30,2013, Pages 2367-2371, doi:10.3760/cma.j.issn.0376-2491.2013.30.008
National Medical Journal of China, Volume 93, Issue 30,2013, Pages 2400-2403, doi:10.3760/cma.j.issn.0376-2491.2013.30.016
National Medical Journal of China, Volume 93, Issue 30,2013, Pages 2416, doi:10.3760/cma.j.issn.0376-2491.2013.30.022
National Medical Journal of China, Volume 93, Issue 30,2013, Pages 2372-2376, doi:10.3760/cma.j.issn.0376-2491.2013.30.009