National Medical Journal of China, Volume 95, Issue 44,2015, Pages 3568-3569, doi:10.3760/cma.j.issn.0376-2491.2015.44.004
National Medical Journal of China, Volume 95, Issue 44,2015, Pages 3607-3610, doi:10.3760/cma.j.issn.0376-2491.2015.44.013
National Medical Journal of China, Volume 95, Issue 44,2015, Pages 3614-3616, doi:10.3760/cma.j.issn.0376-2491.2015.44.015
National Medical Journal of China, Volume 95, Issue 44,2015, Pages 3593-3597, doi:10.3760/cma.j.issn.0376-2491.2015.44.010