National Medical Journal of China, Volume 92, Issue 1,2012, Pages 55-59, doi:10.3760/cma.j.issn.0376-2491.2012.01.016
National Medical Journal of China, Volume 92, Issue 1,2012, Pages 15-17, doi:10.3760/cma.j.issn.0376-2491.2012.01.006
National Medical Journal of China, Volume 92, Issue 1,2012, Pages 60-62, doi:10.3760/cma.j.issn.0376-2491.2012.01.017
National Medical Journal of China, Volume 92, Issue 1,2012, Pages 32-35, doi:10.3760/cma.j.issn.0376-2491.2012.01.011
National Medical Journal of China, Volume 92, Issue 1,2012, Pages 50-54, doi:10.3760/cma.j.issn.0376-2491.2012.01.015