Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 2,2022, Pages 156-160, doi:10.3760/cma.j.cn112141-20211112-00664
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 2,2022, Pages 91-100, doi:10.3760/cma.j.cn112141-20210707-00364
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 2,2022, Pages 133-138, doi:10.3760/cma.j.cn112141-20210823-00463
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 2,2022, Pages 141-143, doi:10.3760/cma.j.cn112141-20210604-00301
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 2,2022, Pages 144-147, doi:10.3760/cma.j.cn112141-20211119-00680