Chinese Journal of Perinatal Medicine, Volume 20, Issue 5,2017, Pages 352-357, doi:10.3760/cma.j.issn.1007-9408.2017.05.010
Chinese Journal of Perinatal Medicine, Volume 20, Issue 5,2017, Pages 329, doi:10.3760/cma.j.issn.1007-9408.2017.05.004
Chinese Journal of Perinatal Medicine, Volume 20, Issue 5,2017, Pages 329, doi:10.3760/cma.j.issn.1007-9408.2017.05.005
Chinese Journal of Perinatal Medicine, Volume 20, Issue 5,2017, Pages 328, doi:10.3760/cma.j.issn.1007-9408.2017.05.003
Chinese Journal of Perinatal Medicine, Volume 20, Issue 5,2017, Pages 387-388, doi:10.3760/cma.j.issn.1007-9408.2017.05.016