National Medical Journal of China, Volume 98, Issue 21,2018, Pages 1674-1678, doi:10.3760/cma.j.issn.0376-2491.2018.21.011
National Medical Journal of China, Volume 98, Issue 21,2018, Pages 1646-1649, doi:10.3760/cma.j.issn.0376-2491.2018.21.005
National Medical Journal of China, Volume 98, Issue 21,2018, Pages 1703-1706, doi:10.3760/cma.j.issn.0376-2491.2018.21.016
National Medical Journal of China, Volume 98, Issue 21,2018, Pages 1664-1668, doi:10.3760/cma.j.issn.0376-2491.2018.21.009
National Medical Journal of China, Volume 98, Issue 21,2018, Pages 1679-1685, doi:10.3760/cma.j.issn.0376-2491.2018.21.012