Chinese Journal of Perinatal Medicine, Volume 24, Issue 8,2021, Pages 583, doi:10.3760/cma.j.issn.1007-9408.2021.08.102
Chinese Journal of Perinatal Medicine, Volume 24, Issue 8,2021, Pages 596, doi:10.3760/cma.j.issn.1007-9408.2021.08.104
Chinese Journal of Perinatal Medicine, Volume 24, Issue 8,2021, Pages 601-607, doi:10.3760/cma.j.cn113903-20200912-00949
Chinese Journal of Perinatal Medicine, Volume 24, Issue 8,2021, Pages 614-621, doi:10.3760/cma.j.cn113903-20210119-00058
Chinese Journal of Perinatal Medicine, Volume 24, Issue 8,2021, Pages 576-583, doi:10.3760/cma.j.cn113903-20210114-00039