Chinese Journal of Perinatal Medicine, Volume 24, Issue 4,2021, Pages 283-287, doi:10.3760/cma.j.cn113903-20200509-00431
Chinese Journal of Perinatal Medicine, Volume 24, Issue 4,2021, Pages 241-244, doi:10.3760/cma.j.cn113903-20210315-00214
Chinese Journal of Perinatal Medicine, Volume 24, Issue 4,2021, Pages 302, doi:10.3760/cma.j.issn.1007-9408.2021.04.104
Chinese Journal of Perinatal Medicine, Volume 24, Issue 4,2021, Pages 297-302, doi:10.3760/cma.j.cn113903-20200804-00738
Chinese Journal of Perinatal Medicine, Volume 24, Issue 4,2021, Pages 277, doi:10.3760/cma.j.issn.1007-9408.2021.04.102