National Medical Journal of China, Volume 98, Issue 31,2018, Pages 2489-2495, doi:10.3760/cma.j.issn.0376-2491.2018.31.008
National Medical Journal of China, Volume 98, Issue 31,2018, Pages 2501-2504, doi:10.3760/cma.j.issn.0376-2491.2018.31.010
National Medical Journal of China, Volume 98, Issue 31,2018, Pages 2533-2536, doi:10.3760/cma.j.issn.0376-2491.2018.31.019
National Medical Journal of China, Volume 98, Issue 31,2018, Pages 2530-2532, doi:10.3760/cma.j.issn.0376-2491.2018.31.018