National Medical Journal of China, Volume 98, Issue 2,2018, Pages 87-90, doi:10.3760/cma.j.issn.0376-2491.2018.02.003
National Medical Journal of China, Volume 98, Issue 2,2018, Pages 156-160, doi:10.3760/cma.j.issn.0376-2491.2018.02.019
National Medical Journal of China, Volume 98, Issue 2,2018, Pages 113-116, doi:10.3760/cma.j.issn.0376-2491.2018.02.008
National Medical Journal of China, Volume 98, Issue 2,2018, Pages 84-86, doi:10.3760/cma.j.issn.0376-2491.2018.02.002
National Medical Journal of China, Volume 98, Issue 2,2018, Pages 146-148, doi:10.3760/cma.j.issn.0376-2491.2018.02.015