National Medical Journal of China, Volume 93, Issue 14,2013, Pages 1047-1049, doi:10.3760/cma.j.issn.0376-2491.2013.14.003
National Medical Journal of China, Volume 93, Issue 14,2013, Pages 1093-1095, doi:10.3760/cma.j.issn.0376-2491.2013.14.014
National Medical Journal of China, Volume 93, Issue 14,2013, Pages 1041-1043, doi:10.3760/cma.j.issn.0376-2491.2013.14.001
National Medical Journal of China, Volume 93, Issue 14,2013, Pages 1104-1108, doi:10.3760/cma.j.issn.0376-2491.2013.14.017
National Medical Journal of China, Volume 93, Issue 14,2013, Pages 1080-1083, doi:10.3760/cma.j.issn.0376-2491.2013.14.011