National Medical Journal of China, Volume 97, Issue 12,2017, Pages 940-943, doi:10.3760/cma.j.issn.0376-2491.2017.12.013
National Medical Journal of China, Volume 97, Issue 12,2017, Pages 915-919, doi:10.3760/cma.j.issn.0376-2491.2017.12.008
National Medical Journal of China, Volume 97, Issue 12,2017, Pages 881-885, doi:10.3760/cma.j.issn.0376-2491.2017.12.001
National Medical Journal of China, Volume 97, Issue 12,2017, Pages 947-949, doi:10.3760/cma.j.issn.0376-2491.2017.12.016
National Medical Journal of China, Volume 97, Issue 12,2017, Pages 890-893, doi:10.3760/cma.j.issn.0376-2491.2017.12.003