Chinese Journal of Perinatal Medicine, Volume 23, Issue 6,2020, Pages 414, doi:10.3760/cma.j.issn.1007-9408.2020.06.101
Chinese Journal of Perinatal Medicine, Volume 23, Issue 6,2020, Pages 431-433, doi:10.3760/cma.j.cn113903-20200504-00413
Chinese Journal of Perinatal Medicine, Volume 23, Issue 6,2020, Pages 420-426, doi:10.3760/cma.j.cn113903-21091105-00622
Chinese Journal of Perinatal Medicine, Volume 23, Issue 6,2020, Pages 387-393, doi:10.3760/cma.j.cn113903-20190812-00498
Chinese Journal of Perinatal Medicine, Volume 23, Issue 6,2020, Pages 361-370, doi:10.3760/cma.j.cn113903-20200526-00493