National Medical Journal of China, Volume 95, Issue 12,2015, Pages 881-884, doi:10.3760/cma.j.issn.0376-2491.2015.12.001
National Medical Journal of China, Volume 95, Issue 12,2015, Pages 929-932, doi:10.3760/cma.j.issn.0376-2491.2015.12.013
National Medical Journal of China, Volume 95, Issue 12,2015, Pages 885-887, doi:10.3760/cma.j.issn.0376-2491.2015.12.002
National Medical Journal of China, Volume 95, Issue 12,2015, Pages 903-907, doi:10.3760/cma.j.issn.0376-2491.2015.12.007
National Medical Journal of China, Volume 95, Issue 12,2015, Pages 920-924, doi:10.3760/cma.j.issn.0376-2491.2015.12.011