National Medical Journal of China, Volume 92, Issue 14,2012, Pages 982-983, doi:10.3760/cma.j.issn.0376-2491.2012.14.014
National Medical Journal of China, Volume 92, Issue 14,2012, Pages 960-963, doi:10.3760/cma.j.issn.0376-2491.2012.14.008
National Medical Journal of China, Volume 92, Issue 14,2012, Pages 948-951, doi:10.3760/cma.j.issn.0376-2491.2012.14.005
National Medical Journal of China, Volume 92, Issue 14,2012, Pages 980-981, doi:10.3760/cma.j.issn.0376-2491.2012.14.013
National Medical Journal of China, Volume 92, Issue 14,2012, Pages 956-959, doi:10.3760/cma.j.issn.0376-2491.2012.14.007