Chinese Journal of Obstetrics and Gynecology, Volume 54, Issue 3,2019, Pages 166-172, doi:10.3760/cma.j.issn.0529-567x.2019.03.005
Chinese Journal of Obstetrics and Gynecology, Volume 54, Issue 3,2019, Pages 200-201, doi:10.3760/cma.j.issn.0529-567x.2019.03.013
Chinese Journal of Obstetrics and Gynecology, Volume 54, Issue 3,2019, Pages 214-216, doi:10.3760/cma.j.issn.0529-567x.2019.03.017
Chinese Journal of Obstetrics and Gynecology, Volume 54, Issue 3,2019, Pages 184-188, doi:10.3760/cma.j.issn.0529-567x.2019.03.008
Chinese Journal of Obstetrics and Gynecology, Volume 54, Issue 3,2019, Pages 173-178, doi:10.3760/cma.j.issn.0529-567x.2019.03.006