National Medical Journal of China, Volume 93, Issue 24,2013, Pages 1857-1859, doi:10.3760/cma.j.issn.0376-2491.2013.24.001
National Medical Journal of China, Volume 93, Issue 24,2013, Pages 1860-1863, doi:10.3760/cma.j.issn.0376-2491.2013.24.002
National Medical Journal of China, Volume 93, Issue 24,2013, Pages 1921-1923, doi:10.3760/cma.j.issn.0376-2491.2013.24.019
National Medical Journal of China, Volume 93, Issue 24,2013, Pages 1894-1896, doi:10.3760/cma.j.issn.0376-2491.2013.24.010