Chinese Journal of Perinatal Medicine, Volume 16, Issue 8,2013, Pages 511-512, doi:10.3760/cma.j.issn.1007-9408.2013.08.016
Chinese Journal of Perinatal Medicine, Volume 16, Issue 8,2013, Pages 489-492, doi:10.3760/cma.j.issn.1007-9408.2013.08.012
Chinese Journal of Perinatal Medicine, Volume 16, Issue 8,2013, Pages 476-478, doi:10.3760/cma.j.issn.1007-9408.2013.08.009
Chinese Journal of Perinatal Medicine, Volume 16, Issue 8,2013, Pages 465-468, doi:10.3760/cma.j.issn.1007-9408.2013.08.006