National Medical Journal of China, Volume 93, Issue 28,2013, Pages 2179-2182, doi:10.3760/cma.j.issn.0376-2491.2013.28.002
National Medical Journal of China, Volume 93, Issue 28,2013, Pages 2220-2224, doi:10.3760/cma.j.issn.0376-2491.2013.28.013
National Medical Journal of China, Volume 93, Issue 28,2013, Pages 2200-2204, doi:10.3760/cma.j.issn.0376-2491.2013.28.007
National Medical Journal of China, Volume 93, Issue 28,2013, Pages 2183-2185, doi:10.3760/cma.j.issn.0376-2491.2013.28.003
National Medical Journal of China, Volume 93, Issue 28,2013, Pages 2253-2256, doi:10.3760/cma.j.issn.0376-2491.2013.28.021