National Medical Journal of China, Volume 99, Issue 34,2019, Pages 2711-2712, doi:10.3760/cma.j.issn.0376-2491.2019.34.015
National Medical Journal of China, Volume 99, Issue 34,2019, Pages 2696-2700, doi:10.3760/cma.j.issn.0376-2491.2019.34.012
National Medical Journal of China, Volume 99, Issue 34,2019, Pages 2687-2690, doi:10.3760/cma.j.issn.0376-2491.2019.34.010
National Medical Journal of China, Volume 99, Issue 34,2019, Pages 2650-2653, doi:10.3760/cma.j.issn.0376-2491.2019.34.003
National Medical Journal of China, Volume 99, Issue 34,2019, Pages 2675-2680, doi:10.3760/cma.j.issn.0376-2491.2019.34.008