National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2765-2766, doi:10.3760/cma.j.issn.0376-2491.2013.34.022
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2715-2718, doi:10.3760/cma.j.issn.0376-2491.2013.34.008
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2695-2698, doi:10.3760/cma.j.issn.0376-2491.2013.34.003
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2707-2710, doi:10.3760/cma.j.issn.0376-2491.2013.34.006
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2699-2702, doi:10.3760/cma.j.issn.0376-2491.2013.34.004