Chinese Journal of Perinatal Medicine, Volume 19, Issue 2,2016, Pages 152-156, doi:10.3760/cma.j.issn.1007-9408.2016.02.018
Chinese Journal of Perinatal Medicine, Volume 19, Issue 2,2016, Pages 135-137, doi:10.3760/cma.j.issn.1007-9408.2016.02.012
Chinese Journal of Perinatal Medicine, Volume 19, Issue 2,2016, Pages 128-131, doi:10.3760/cma.j.issn.1007-9408.2016.02.010
Chinese Journal of Perinatal Medicine, Volume 19, Issue 2,2016, Pages 85-89, doi:10.3760/cma.j.issn.1007-9408.2016.02.002
Chinese Journal of Perinatal Medicine, Volume 19, Issue 2,2016, Pages 81-84, doi:10.3760/cma.j.issn.1007-9408.2016.02.001