National Medical Journal of China, Volume 99, Issue 17,2019, Pages 1349-1352, doi:10.3760/cma.j.issn.0376-2491.2019.17.018
National Medical Journal of China, Volume 99, Issue 17,2019, Pages 1358-1360, doi:10.3760/cma.j.issn.0376-2491.2019.17.020
National Medical Journal of China, Volume 99, Issue 17,2019, Pages 1340-1341, doi:10.3760/cma.j.issn.0376-2491.2019.17.014
National Medical Journal of China, Volume 99, Issue 17,2019, Pages 1312-1316, doi:10.3760/cma.j.issn.0376-2491.2019.17.008
National Medical Journal of China, Volume 99, Issue 17,2019, Pages 1302-1306, doi:10.3760/cma.j.issn.0376-2491.2019.17.006