National Medical Journal of China, Volume 98, Issue 13,2018, Pages 982-986, doi:10.3760/cma.j.issn.0376-2491.2018.13.006
National Medical Journal of China, Volume 98, Issue 13,2018, Pages 1013-1018, doi:10.3760/cma.j.issn.0376-2491.2018.13.012
National Medical Journal of China, Volume 98, Issue 13,2018, Pages 992-997, doi:10.3760/cma.j.issn.0376-2491.2018.13.008
National Medical Journal of China, Volume 98, Issue 13,2018, Pages 1019-1023, doi:10.3760/cma.j.issn.0376-2491.2018.013.013