National Medical Journal of China, Volume 95, Issue 22,2015, Pages 1768-1772, doi:10.3760/cma.j.issn.0376-2491.2015.22.015
National Medical Journal of China, Volume 95, Issue 22,2015, Pages 1747-1750, doi:10.3760/cma.j.issn.0376-2491.2015.22.009
National Medical Journal of China, Volume 95, Issue 22,2015, Pages 1719-1721, doi:10.3760/cma.j.issn.0376-2491.2015.22.003
National Medical Journal of China, Volume 95, Issue 22,2015, Pages 1765-1767, doi:10.3760/cma.j.issn.0376-2491.2015.22.014