National Medical Journal of China, Volume 98, Issue 5,2018, Pages 383-384, doi:10.3760/cma.j.issn.0376-2491.2018.05.015
National Medical Journal of China, Volume 98, Issue 5,2018, Pages 346-351, doi:10.3760/cma.j.issn.0376-2491.2018.05.006
National Medical Journal of China, Volume 98, Issue 5,2018, Pages 340-345, doi:10.3760/cma.j.issn.0376-2491.2018.05.005
National Medical Journal of China, Volume 98, Issue 5,2018, Pages 336-339, doi:10.3760/cma.j.issn.0376-2491.2018.05.004
National Medical Journal of China, Volume 98, Issue 5,2018, Pages 332-335, doi:10.3760/cma.j.issn.0376-2491.2018.05.003