Chinese Journal of Obstetrics and Gynecology, Volume 56, Issue 10,2021, Pages 728-731, doi:10.3760/cma.j.cn112141-20210521-00281
Chinese Journal of Obstetrics and Gynecology, Volume 56, Issue 10,2021, Pages 705-711, doi:10.3760/cma.j.cn112141-20210610-00315
Chinese Journal of Obstetrics and Gynecology, Volume 56, Issue 10,2021, Pages 718-722, doi:10.3760/cma.j.cn112141-20210713-00372
Chinese Journal of Obstetrics and Gynecology, Volume 56, Issue 10,2021, Pages 697-704, doi:10.3760/cma.j.cn112141-20210811-00443
Chinese Journal of Obstetrics and Gynecology, Volume 56, Issue 10,2021, Pages 691-696, doi:10.3760/cma.j.cn112141-20210809-00434