Chinese Journal of Perinatal Medicine, Volume 23, Issue 9,2020, Pages 615-622, doi:10.3760/cma.j.cn113903-20200221-00141
Chinese Journal of Perinatal Medicine, Volume 23, Issue 9,2020, Pages 623-625, doi:10.3760/cma.j.cn113903-20200402-00304
Chinese Journal of Perinatal Medicine, Volume 23, Issue 9,2020, Pages 645-648, doi:10.3760/cma.j.cn113903-20200805-00745
Chinese Journal of Perinatal Medicine, Volume 23, Issue 9,2020, Pages 577-584, doi:10.3760/cma.j.cn113903-20200401-00293
Chinese Journal of Perinatal Medicine, Volume 23, Issue 9,2020, Pages 599, doi:10.3760/cma.j.issn.1007-9408.2020.09.101