National Medical Journal of China, Volume 98, Issue 28,2018, Pages 2254-2257, doi:10.3760/cma.j.issn.0376-2491.2018.28.009
National Medical Journal of China, Volume 98, Issue 28,2018, Pages 2242-2245, doi:10.3760/cma.j.issn.0376-2491.2018.28.006
National Medical Journal of China, Volume 98, Issue 28,2018, Pages 2225-2232, doi:10.3760/cma.j.issn.0376-2491.2018.28.003
National Medical Journal of China, Volume 98, Issue 28,2018, Pages 2291-2292, doi:10.3760/cma.j.issn.0376-2491.2018.28.018