Chinese Journal of Perinatal Medicine, Volume 17, Issue 4,2014, Pages 217, doi:10.3760/cma.j.issn.1007-9408.2014.04.001
Chinese Journal of Perinatal Medicine, Volume 17, Issue 4,2014, Pages 260-266, doi:10.3760/cma.j.issn.1007-9408.2014.04.011
Chinese Journal of Perinatal Medicine, Volume 17, Issue 4,2014, Pages 286-287, doi:10.3760/cma.j.issn.1007-9408.2014.04.017
Chinese Journal of Perinatal Medicine, Volume 17, Issue 4,2014, Pages 230-236, doi:10.3760/cma.j.issn.1007-9408.2014.04.005
Chinese Journal of Perinatal Medicine, Volume 17, Issue 4,2014, Pages 224-229, doi:10.3760/cma.j.issn.1007-9408.2014.04.004