National Medical Journal of China, Volume 99, Issue 12,2019, Pages 955-957, doi:10.3760/cma.j.issn.0376-2491.2019.12.017
National Medical Journal of China, Volume 99, Issue 12,2019, Pages 923-928, doi:10.3760/cma.j.issn.0376-2491.2019.12.009
National Medical Journal of China, Volume 99, Issue 12,2019, Pages 884-888, doi:10.3760/cma.j.issn.0376-2491.2019.12.002
National Medical Journal of China, Volume 99, Issue 12,2019, Pages 953-954, doi:10.3760/cma.j.issn.0376-2491.2019.12.016
National Medical Journal of China, Volume 99, Issue 12,2019, Pages 950-952, doi:10.3760/cma.j.issn.0376-2491.2019.12.015