National Medical Journal of China, Volume 99, Issue 45,2019, Pages 3554-3557, doi:10.3760/cma.j.issn.0376-2491.2019.45.005
National Medical Journal of China, Volume 99, Issue 45,2019, Pages 3547-3553, doi:10.3760/cma.j.issn.0376-2491.2019.45.004
National Medical Journal of China, Volume 99, Issue 45,2019, Pages 3592-3596, doi:10.3760/cma.j.issn.0376-2491.2019.45.012
National Medical Journal of China, Volume 99, Issue 45,2019, Pages 3581-3586, doi:10.3760/cma.j.issn.0376-2491.2019.45.010
National Medical Journal of China, Volume 99, Issue 45,2019, Pages 3521-3523, doi:10.3760/cma.j.issn.0376-2491.2019.45.001