Chinese Journal of Perinatal Medicine, Volume 20, Issue 2,2017, Pages 153-158, doi:10.3760/cma.j.issn.1007-9408.2017.02.104
Chinese Journal of Perinatal Medicine, Volume 20, Issue 2,2017, Pages 125-131, doi:10.3760/cma.j.issn.1007-9408.2017.02.012
Chinese Journal of Perinatal Medicine, Volume 20, Issue 2,2017, Pages 146-149, doi:10.3760/cma.j.issn.1007-9408.2017.02.017
Chinese Journal of Perinatal Medicine, Volume 20, Issue 2,2017, Pages 110-114, doi:10.3760/cma.j.issn.1007-9408.2017.02.009
Chinese Journal of Perinatal Medicine, Volume 20, Issue 2,2017, Pages 91-92, doi:10.3760/cma.j.issn.1007-9408.2017.02.003