National Medical Journal of China, Volume 92, Issue 9,2012, Pages 577-578, doi:10.3760/cma.j.issn.0376-2491.2012.09.001
National Medical Journal of China, Volume 92, Issue 9,2012, Pages 583-586, doi:10.3760/cma.j.issn.0376-2491.2012.09.003
National Medical Journal of China, Volume 92, Issue 9,2012, Pages 591, doi:10.3760/cma.j.issn.0376-2491.2012.09.005
National Medical Journal of China, Volume 92, Issue 9,2012, Pages 645-648, doi:10.3760/cma.j.issn.0376-2491.2012.09.019
National Medical Journal of China, Volume 92, Issue 9,2012, Pages 608-611, doi:10.3760/cma.j.issn.0376-2491.2012.09.010