National Medical Journal of China, Volume 93, Issue 19,2013, Pages 1476-1478, doi:10.3760/cma.j.issn.0376-2491.2013.19.010
National Medical Journal of China, Volume 93, Issue 19,2013, Pages 1494-1498, doi:10.3760/cma.j.issn.0376-2491.2013.19.016
National Medical Journal of China, Volume 93, Issue 19,2013, Pages 1458-1462, doi:10.3760/cma.j.issn.0376-2491.2013.19.006
National Medical Journal of China, Volume 93, Issue 19,2013, Pages 1507-1511, doi:10.3760/cma.j.issn.0376-2491.2013.19.019
National Medical Journal of China, Volume 93, Issue 19,2013, Pages 1441-1445, doi:10.3760/cma.j.issn.0376-2491.2013.19.001