National Medical Journal of China, Volume 98, Issue 12,2018, Pages 921-925, doi:10.3760/cma.j.issn.0376-2491.2018.12.009
National Medical Journal of China, Volume 98, Issue 12,2018, Pages 944-947, doi:10.3760/cma.j.issn.0376-2491.2018.12.014
National Medical Journal of China, Volume 98, Issue 12,2018, Pages 958-960, doi:10.3760/cma.j.issn.0376-2491.2018.12.019
National Medical Journal of China, Volume 98, Issue 12,2018, Pages 883-885, doi:10.3760/cma.j.issn.0376-2491.2018.12.002
National Medical Journal of China, Volume 98, Issue 12,2018, Pages 895-900, doi:10.3760/cma.j.issn.0376-2491.2018.12.004