National Medical Journal of China, Volume 92, Issue 29,2012, Pages 2081-2083, doi:10.3760/cma.j.issn.0376-2491.2012.29.018
National Medical Journal of China, Volume 92, Issue 29,2012, Pages 2088, doi:10.3760/cma.j.issn.0376-2491.2012.29.021
National Medical Journal of China, Volume 92, Issue 29,2012, Pages 2017-2019, doi:10.3760/cma.j.issn.0376-2491.2012.29.001
National Medical Journal of China, Volume 92, Issue 29,2012, Pages 2059-2062, doi:10.3760/cma.j.issn.0376-2491.2012.29.011
National Medical Journal of China, Volume 92, Issue 29,2012, Pages 2078-2080, doi:10.3760/cma.j.issn.0376-2491.2012.29.017