Chinese Journal of Perinatal Medicine, Volume 17, Issue 1,2014, Pages 19-22, doi:10.3760/cma.j.issn.1007-9408.2014.01.005
Chinese Journal of Perinatal Medicine, Volume 17, Issue 1,2014, Pages 45-47, doi:10.3760/cma.j.issn.1007-9408.2014.01.011
Chinese Journal of Perinatal Medicine, Volume 17, Issue 1,2014, Pages 68-69, doi:10.3760/cma.j.issn.1007-9408.2014.01.019
Chinese Journal of Perinatal Medicine, Volume 17, Issue 1,2014, Pages 39-42, doi:10.3760/cma.j.issn.1007-9408.2014.01.009
Chinese Journal of Perinatal Medicine, Volume 17, Issue 1,2014, Pages 55-57, doi:10.3760/cma.j.issn.1007-9408.2014.01.015