National Medical Journal of China, Volume 99, Issue 13,2019, Pages 1038-1040, doi:10.3760/cma.j.issn.0376-2491.2019.13.017
National Medical Journal of China, Volume 99, Issue 13,2019, Pages 965-970, doi:10.3760/cma.j.issn.0376-2491.2019.13.002
National Medical Journal of China, Volume 99, Issue 13,2019, Pages 961-964, doi:10.3760/cma.j.issn.0376-2491.2019.13.001
National Medical Journal of China, Volume 99, Issue 13,2019, Pages 1037, doi:10.3760/cma.j.issn.0376-2491.2019.13.016
National Medical Journal of China, Volume 99, Issue 13,2019, Pages 1024-1027, doi:10.3760/cma.j.issn.0376-2491.2019.13.013