Chinese Journal of Perinatal Medicine, Volume 20, Issue 11,2017, Pages 801-804, doi:10.3760/cma.j.issn.1007-9408.2017.11.007
Chinese Journal of Perinatal Medicine, Volume 20, Issue 11,2017, Pages 796-800, doi:10.3760/cma.j.issn.1007-9408.2017.11.006
Chinese Journal of Perinatal Medicine, Volume 20, Issue 11,2017, Pages 776-778, doi:10.3760/cma.j.issn.1007-9408.2017.11.002
Chinese Journal of Perinatal Medicine, Volume 20, Issue 11,2017, Pages 783-789, doi:10.3760/cma.j.issn.1007-9408.2017.11.004
Chinese Journal of Perinatal Medicine, Volume 20, Issue 11,2017, Pages 790-795, doi:10.3760/cma.j.issn.1007-9408.2017.11.005