National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1901-1904, doi:10.3760/cma.j.issn.0376-2491.2012.27.009
National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1944, doi:10.3760/cma.j.issn.0376-2491.2012.27.026
National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1918, doi:10.3760/cma.j.issn.0376-2491.2012.27.015
National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1932-1933, doi:10.3760/cma.j.issn.0376-2491.2012.27.020
National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1937-1938, doi:10.3760/cma.j.issn.0376-2491.2012.27.022