National Medical Journal of China, Volume 99, Issue 42,2019, Pages 3318-3322, doi:10.3760/cma.j.issn.0376-2491.2019.42.009
National Medical Journal of China, Volume 99, Issue 42,2019, Pages 3288-3291, doi:10.3760/cma.j.issn.0376-2491.2019.42.003
National Medical Journal of China, Volume 99, Issue 42,2019, Pages 3328-3334, doi:10.3760/cma.j.issn.0376-2491.2019.42.011
National Medical Journal of China, Volume 99, Issue 42,2019, Pages 3284-3287, doi:10.3760/cma.j.issn.0376-2491.2019.42.002
National Medical Journal of China, Volume 99, Issue 42,2019, Pages 3350-3354, doi:10.3760/cma.j.issn.0376-2491.2019.42.015