Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 4,2022, Pages 244-252, doi:10.3760/cma.j.cn112141-20210830-00476
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 4,2022, Pages 265-270, doi:10.3760/cma.j.cn112141-20210830-00475
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 4,2022, Pages 307-310, doi:10.3760/cma.j.cn112141-20210831-00481
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 4,2022, Pages 259-264, doi:10.3760/cma.j.cn112141-20210915-00521
Chinese Journal of Obstetrics and Gynecology, Volume 57, Issue 4,2022, Pages 253-258, doi:10.3760/cma.j.cn112141-20210902-00483