National Medical Journal of China, Volume 98, Issue 2,2018, Pages 146-148, doi:10.3760/cma.j.issn.0376-2491.2018.02.015
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 81-83, doi:10.3760/cma.j.issn.0376-2491.2018.02.001
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 122-126, doi:10.3760/cma.j.issn.0376-2491.2018.02.010