National Medical Journal of China, Volume 98, Issue 6,2018, Pages 436-439, doi:10.3760/cma.j.issn.0376-2491.2018.06.008
National Medical Journal of China, Volume 98, Issue 6,2018, Pages 418-421, doi:10.3760/cma.j.issn.0376-2491.2018.06.004
National Medical Journal of China, Volume 98, Issue 6,2018, Pages 417,421,426,431,439,449,453,459,480,
National Medical Journal of China, Volume 98, Issue 6,2018, Pages 457-459, doi:10.3760/cma.j.issn.0376-2491.2018.06.013
National Medical Journal of China, Volume 98, Issue 6,2018, Pages 404-407, doi:10.3760/cma.j.issn.0376-2491.2018.06.002