National Medical Journal of China, Volume 99, Issue 39,2019, Pages 3077-3080, doi:10.3760/cma.j.issn.0376-2491.2019.39.007
National Medical Journal of China, Volume 99, Issue 39,2019, Pages 3068-3072, doi:10.3760/cma.j.issn.0376-2491.2019.39.005
National Medical Journal of China, Volume 99, Issue 39,2019, Pages 3047-3061, doi:10.3760/cma.j.issn.0376-2491.2019.39.003
National Medical Journal of China, Volume 99, Issue 39,2019, Pages 3085-3088, doi:10.3760/cma.j.issn.0376-2491.2019.39.009
National Medical Journal of China, Volume 99, Issue 39,2019, Pages 3105-3109, doi:10.3760/cma.j.issn.0376-2491.2019.39.013