Chinese Journal of Perinatal Medicine, Volume 24, Issue 7,2021, Pages 534, doi:10.3760/cma.j.issn.1007-9408.2021.07.102
Chinese Journal of Perinatal Medicine, Volume 24, Issue 7,2021, Pages 539-544, doi:10.3760/cma.j.cn113903-20200903-00917
Chinese Journal of Perinatal Medicine, Volume 24, Issue 7,2021, Pages 556-560, doi:10.3760/cma.j.cn113903-20200802-00731
Chinese Journal of Perinatal Medicine, Volume 24, Issue 7,2021, Pages 497-502, doi:10.3760/cma.j.cn113903-20210323-00250
Chinese Journal of Perinatal Medicine, Volume 24, Issue 7,2021, Pages 531-534, doi:10.3760/cma.j.cn113903-20210330-00286