National Medical Journal of China, Volume 96, Issue 5,2016, Pages 358-360, doi:10.3760/cma.j.issn.0376-2491.2016.05.009
National Medical Journal of China, Volume 96, Issue 5,2016, Pages 339-343, doi:10.3760/cma.j.issn.0376-2491.2016.05.005
National Medical Journal of China, Volume 96, Issue 5,2016, Pages 380-383, doi:10.3760/cma.j.issn.0376-2491.2016.05.014
National Medical Journal of China, Volume 96, Issue 5,2016, Pages 344-348, doi:10.3760/cma.j.issn.0376-2491.2016.05.006
National Medical Journal of China, Volume 96, Issue 5,2016, Pages 329-333, doi:10.3760/cma.j.issn.0376-2491.2016.05.003