National Medical Journal of China, Volume 98, Issue 35,2018, Pages 2815-2818, doi:10.3760/cma.j.issn.0376-2491.2018.35.009
National Medical Journal of China, Volume 98, Issue 35,2018, Pages 2841-2843, doi:10.3760/cma.j.issn.0376-2491.2018.35.015
National Medical Journal of China, Volume 98, Issue 35,2018, Pages 2796-2799, doi:10.3760/cma.j.issn.0376-2491.2018.35.006
National Medical Journal of China, Volume 98, Issue 35,2018, Pages 2827-2831, doi:10.3760/cma.j.issn.0376-2491.2018.35.012
National Medical Journal of China, Volume 98, Issue 35,2018, Pages 2781-2784, doi:10.3760/cma.j.issn.0376-2491.2018.35.002