Chinese Journal of Perinatal Medicine, Volume 17, Issue 2,2014, Pages 82-87, doi:10.3760/cma.j.issn.1007-9408.2014.02.003
Chinese Journal of Perinatal Medicine, Volume 17, Issue 2,2014, Pages 140-141, doi:10.3760/cma.j.issn.1007-9408.2014.02.016
Chinese Journal of Perinatal Medicine, Volume 17, Issue 2,2014, Pages 119-122, doi:10.3760/cma.j.issn.1007-9408.2014.02.010
Chinese Journal of Perinatal Medicine, Volume 17, Issue 2,2014, Pages 78-81, doi:10.3760/cma.j.issn.1007-9408.2014.02.002
Chinese Journal of Perinatal Medicine, Volume 17, Issue 2,2014, Pages 131-134, doi:10.3760/cma.j.issn.1007-9408.2014.02.014