National Medical Journal of China, Volume 99, Issue 33,2019, Pages 2606-2610, doi:10.3760/cma.j.issn.0376-2491.2019.33.010
National Medical Journal of China, Volume 99, Issue 33,2019, Pages 2597-2601, doi:10.3760/cma.j.issn.0376-2491.2019.33.008
National Medical Journal of China, Volume 99, Issue 33,2019, Pages 2629-2630, doi:10.3760/cma.j.issn.0376-2491.2019.33.017
National Medical Journal of China, Volume 99, Issue 33,2019, Pages 2637-2640, doi:10.3760/cma.j.issn.0376-2491.2019.33.020
National Medical Journal of China, Volume 99, Issue 33,2019, Pages 2627-2628, doi:10.3760/cma.j.issn.0376-2491.2019.33.016