National Medical Journal of China, Volume 99, Issue 41,2019, Pages 3273-3276, doi:10.3760/cma.j.issn.0376-2491.2019.41.014
National Medical Journal of China, Volume 99, Issue 41,2019, Pages 3227-3231, doi:10.3760/cma.j.issn.0376-2491.2019.41.006
National Medical Journal of China, Volume 99, Issue 41,2019, Pages 3232-3236, doi:10.3760/cma.j.issn.0376-2491.2019.41.007
National Medical Journal of China, Volume 99, Issue 41,2019, Pages 3201-3203, doi:10.3760/cma.j.issn.0376-2491.2019.41.001
National Medical Journal of China, Volume 99, Issue 41,2019, Pages 3204-3208, doi:10.3760/cma.j.issn.0376-2491.2019.41.002