Chinese Journal of Perinatal Medicine, Volume 23, Issue 1,2020, Pages 38, doi:10.3760/cma.j.issn.1007-9408.2020.01.102
Chinese Journal of Perinatal Medicine, Volume 23, Issue 1,2020, Pages 8-17, doi:10.3760/cma.j.issn.1007-9408.2020.01.003
Chinese Journal of Perinatal Medicine, Volume 23, Issue 1,2020, Pages 56-60, doi:10.3760/cma.j.issn.1007-9408.2020.01.011
Chinese Journal of Perinatal Medicine, Volume 23, Issue 1,2020, Pages 2-7, doi:10.3760/cma.j.issn.1007-9408.2020.01.002
Chinese Journal of Perinatal Medicine, Volume 23, Issue 1,2020, Pages 25-28, doi:10.3760/cma.j.issn.1007-9408.2020.01.005