National Medical Journal of China, Volume 98, Issue 19,2018, Pages 1484-1488, doi:10.3760/cma.j.issn.0376-2491.2018.19.006
National Medical Journal of China, Volume 98, Issue 19,2018, Pages 1511-1516, doi:10.3760/cma.j.issn.0376-2491.2018.19.012
National Medical Journal of China, Volume 98, Issue 19,2018, Pages 1498-1502, doi:10.3760/cma.j.issn.0376-2491.2018.19.009
National Medical Journal of China, Volume 98, Issue 19,2018, Pages 1479-1483, doi:10.3760/cma.j.issn.0376-2491.2018.19.005
National Medical Journal of China, Volume 98, Issue 19,2018, Pages 1519-1520, doi:10.3760/cma.j.issn.0376-2491.2018.19.014