National Medical Journal of China, Volume 94, Issue 19,2014, Pages 1448-1451, doi:10.3760/cma.j.issn.0376-2491.2014.19.004
National Medical Journal of China, Volume 94, Issue 19,2014, Pages 1503-1506, doi:10.3760/cma.j.issn.0376-2491.2014.19.018
National Medical Journal of China, Volume 94, Issue 19,2014, Pages 1459-1461, doi:10.3760/cma.j.issn.0376-2491.2014.19.007
National Medical Journal of China, Volume 94, Issue 19,2014, Pages 1507-1511, doi:10.3760/cma.j.issn.0376-2491.2014.19.019
National Medical Journal of China, Volume 94, Issue 19,2014, Pages 1462-1465, doi:10.3760/cma.j.issn.0376-2491.2014.19.008