National Medical Journal of China, Volume 92, Issue 28,2012, Pages 1959-1962, doi:10.3760/cma.j.issn.0376-2491.2012.28.005
National Medical Journal of China, Volume 92, Issue 28,2012, Pages 2011-2012, doi:10.3760/cma.j.issn.0376-2491.2012.28.021
National Medical Journal of China, Volume 92, Issue 28,2012, Pages 1988-1991, doi:10.3760/cma.j.issn.0376-2491.2012.28.014
National Medical Journal of China, Volume 92, Issue 28,2012, Pages 2002-2004, doi:10.3760/cma.j.issn.0376-2491.2012.28.018
National Medical Journal of China, Volume 92, Issue 28,2012, Pages 1945-1947, doi:10.3760/cma.j.issn.0376-2491.2012.28.001