National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1904, doi:10.3760/cma.j.issn.0376-2491.2012.27.010
National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1896-1900, doi:10.3760/cma.j.issn.0376-2491.2012.27.008
National Medical Journal of China, Volume 92, Issue 27,2012, Pages 1882-1885, doi:10.3760/cma.j.issn.0376-2491.2012.27.004
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 1918, doi:10.3760/cma.j.issn.0376-2491.2012.27.015