Chinese Journal of Perinatal Medicine, Volume 23, Issue 8,2020, Pages 568-569, doi:10.3760/cma.j.issn.1007-9408.2020.08.107
Chinese Journal of Perinatal Medicine, Volume 23, Issue 8,2020, Pages 561-564, doi:10.3760/cma.j.cn113903-20200118-00032
Chinese Journal of Perinatal Medicine, Volume 23, Issue 8,2020, Pages 545-548, doi:10.3760/cma.j.cn113903-20191113-00640
Chinese Journal of Perinatal Medicine, Volume 23, Issue 8,2020, Pages 567-568, doi:10.3760/cma.j.issn.1007-9408.2020.08.106
Chinese Journal of Perinatal Medicine, Volume 23, Issue 8,2020, Pages 517-522, doi:10.3760/cma.j.cn113903-20200402-00299