National Medical Journal of China, Volume 94, Issue 11,2014, Pages 859-862, doi:10.3760/cma.j.issn.0376-2491.2014.11.016
National Medical Journal of China, Volume 94, Issue 11,2014, Pages 840-843, doi:10.3760/cma.j.issn.0376-2491.2014.11.010
National Medical Journal of China, Volume 94, Issue 11,2014, Pages 866-868, doi:10.3760/cma.j.issn.0376-2491.2014.11.018
National Medical Journal of China, Volume 94, Issue 11,2014, Pages 836-839, doi:10.3760/cma.j.issn.0376-2491.2014.11.009
National Medical Journal of China, Volume 94, Issue 11,2014, Pages 863-865, doi:10.3760/cma.j.issn.0376-2491.2014.11.017