Chinese Journal of Perinatal Medicine, Volume 22, Issue 5,2019, Pages 封3, doi:10.3760/cma.j.issn.1007-9408.2019.05.014
Chinese Journal of Perinatal Medicine, Volume 22, Issue 5,2019, Pages 296-302, doi:10.3760/cma.j.issn.1007-9408.2019.05.002
Chinese Journal of Perinatal Medicine, Volume 22, Issue 5,2019, Pages 331-335, doi:10.3760/cma.j.issn.1007-9408.2019.05.007
Chinese Journal of Perinatal Medicine, Volume 22, Issue 5,2019, Pages 324-330, doi:10.3760/cma.j.issn.1007-9408.2019.05.006
Chinese Journal of Perinatal Medicine, Volume 22, Issue 5,2019, Pages 289-295, doi:10.3760/cma.j.issn.1007-9408.2019.05.001