National Medical Journal of China, Volume 98, Issue 27,2018, Pages 2168-2171, doi:10.3760/cma.j.issn.0376-2491.2018.27.008
National Medical Journal of China, Volume 98, Issue 27,2018, Pages 2198-2202, doi:10.3760/cma.j.issn.0376-2491.2018.27.015
National Medical Journal of China, Volume 98, Issue 27,2018, Pages 2144-2147, doi:10.3760/cma.j.issn.0376-2491.2018.27.003
National Medical Journal of China, Volume 98, Issue 27,2018, Pages 2172-2175, doi:10.3760/cma.j.issn.0376-2491.2018.27.009
National Medical Journal of China, Volume 98, Issue 27,2018, Pages 2148-2151, doi:10.3760/cma.j.issn.0376-2491.2018.27.004