National Medical Journal of China, Volume 95, Issue 5,2015, Pages 386-391, doi:10.3760/cma.j.issn.0376-2491.2015.05.017
National Medical Journal of China, Volume 95, Issue 5,2015, Pages 378-381, doi:10.3760/cma.j.issn.0376-2491.2015.05.015
National Medical Journal of China, Volume 95, Issue 5,2015, Pages 392-393, doi:10.3760/cma.j.issn.0376-2491.2015.05.018
National Medical Journal of China, Volume 95, Issue 5,2015, Pages 344-348, doi:10.3760/cma.j.issn.0376-2491.2015.05.007
National Medical Journal of China, Volume 95, Issue 5,2015, Pages 374-377, doi:10.3760/cma.j.issn.0376-2491.2015.05.014