National Medical Journal of China, Volume 100, Issue 8,2020, Pages 566-572, doi:10.3760/cma.j.issn.0376-2491.2020.08.003
National Medical Journal of China, Volume 100, Issue 8,2020, Pages 561-562, doi:10.3760/cma.j.issn.0376-2491.2020.08.001
National Medical Journal of China, Volume 100, Issue 8,2020, Pages 638-640, doi:10.3760/cma.j.issn.0376-2491.2020.08.016
National Medical Journal of China, Volume 100, Issue 8,2020, Pages 614-618, doi:10.3760/cma.j.issn.0376-2491.2020.08.010
National Medical Journal of China, Volume 100, Issue 8,2020, Pages 563-565, doi:10.3760/cma.j.issn.0376-2491.2020.08.002