Chinese Journal of Perinatal Medicine, Volume 16, Issue 9,2013, Pages 527-528, doi:10.3760/cma.j.issn.1007-9408.2013.09.005
Chinese Journal of Perinatal Medicine, Volume 16, Issue 9,2013, Pages 566-571, doi:10.3760/cma.j.issn.1007-9408.2013.09.015
Chinese Journal of Perinatal Medicine, Volume 16, Issue 9,2013, Pages 551-554, doi:10.3760/cma.j.issn.1007-9408.2013.09.012
Chinese Journal of Perinatal Medicine, Volume 16, Issue 9,2013, Pages 555-560, doi:10.3760/cma.j.issn.1007-9408.2013.09.013
Chinese Journal of Perinatal Medicine, Volume 16, Issue 9,2013, Pages 546-550, doi:10.3760/cma.j.issn.1007-9408.2013.09.011