Chinese Journal of Perinatal Medicine, Volume 20, Issue 10,2017, Pages 739-745, doi:10.3760/cma.j.issn.1007-9408.2017.10.009
Chinese Journal of Perinatal Medicine, Volume 20, Issue 10,2017, Pages 761-763, doi:10.3760/cma.j.issn.1007-9408.2017.10.014
Chinese Journal of Perinatal Medicine, Volume 20, Issue 10,2017, Pages 756-758, doi:10.3760/cma.j.issn.1007-9408.2017.10.012
Chinese Journal of Perinatal Medicine, Volume 20, Issue 10,2017, Pages 733-738, doi:10.3760/cma.j.issn.1007-9408.2017.10.008
Chinese Journal of Perinatal Medicine, Volume 20, Issue 10,2017, Pages 724-727, doi:10.3760/cma.j.issn.1007-9408.2017.10.006