National Medical Journal of China, Volume 98, Issue 25,2018, Pages 2045-2048, doi:10.3760/cma.j.issn.0376-2491.2018.25.018
National Medical Journal of China, Volume 98, Issue 25,2018, Pages 2019-2023, doi:10.3760/cma.j.issn.0376-2491.2018.25.011
National Medical Journal of China, Volume 98, Issue 25,2018, Pages 2052-2054, doi:10.3760/cma.j.issn.0376-2491.2018.25.020
National Medical Journal of China, Volume 98, Issue 25,2018, Pages 2011-2014, doi:10.3760/cma.j.issn.0376-2491.2018.25.009
National Medical Journal of China, Volume 98, Issue 25,2018, Pages 2002-2006, doi:10.3760/cma.j.issn.0376-2491.2018.25.007