Chinese Journal of Obstetrics and Gynecology, Volume 55, Issue 5,2020, Pages 353-356, doi:10.3760/cma.j.cn112141-20191216-00674
Chinese Journal of Obstetrics and Gynecology, Volume 55, Issue 5,2020, Pages 307-311, doi:10.3760/cma.j.cn112141-20200201-00070
Chinese Journal of Obstetrics and Gynecology, Volume 55, Issue 5,2020, Pages 343-345, doi:10.3760/cma.j.cn112141-20191124-00640
Chinese Journal of Obstetrics and Gynecology, Volume 55, Issue 5,2020, Pages 349-350, doi:10.3760/cma.j.cn112141-20200129-00067
Chinese Journal of Obstetrics and Gynecology, Volume 55, Issue 5,2020, Pages 291-299, doi:10.3760/cma.j.cn112141-20200213-00101