National Medical Journal of China, Volume 97, Issue 10,2017, Pages 735-738, doi:10.3760/cma.j.issn.0376-2491.2017.10.004
National Medical Journal of China, Volume 97, Issue 10,2017, Pages 777-781, doi:10.3760/cma.j.issn.0376-2491.2017.10.012
National Medical Journal of China, Volume 97, Issue 10,2017, Pages 765-769, doi:10.3760/cma.j.issn.0376-2491.2017.10.010
National Medical Journal of China, Volume 97, Issue 10,2017, Pages 739-742, doi:10.3760/cma.j.issn.0376-2491.2017.10.005
National Medical Journal of China, Volume 97, Issue 10,2017, Pages 743-748, doi:10.3760/cma.j.issn.0376-2491.2017.10.006