National Medical Journal of China, Volume 92, Issue 36,2012, Pages 2542-2545, doi:10.3760/cma.j.issn.0376-2491.2012.36.007
National Medical Journal of China, Volume 92, Issue 36,2012, Pages 2578-2579, doi:10.3760/cma.j.issn.0376-2491.2012.36.016
National Medical Journal of China, Volume 92, Issue 36,2012, Pages 2534-2537, doi:10.3760/cma.j.issn.0376-2491.2012.36.005
National Medical Journal of China, Volume 92, Issue 36,2012, Pages 2591-2592, doi:10.3760/cma.j.issn.0376-2491.2012.36.022
National Medical Journal of China, Volume 92, Issue 36,2012, Pages 2585-2587, doi:10.3760/cma.j.issn.0376-2491.2012.36.019