Chinese Journal of Obstetrics and Gynecology, Volume 53, Issue 10,2018, Pages 683-688, doi:10.3760/cma.j.issn.0529-567x.2018.10.006
Chinese Journal of Obstetrics and Gynecology, Volume 53, Issue 10,2018, Pages 700-704, doi:10.3760/cma.j.issn.0529-567x.2018.10.009
Chinese Journal of Obstetrics and Gynecology, Volume 53, Issue 10,2018, Pages 705-710, doi:10.3760/cma.j.issn.0529-567x.2018.10.010
Chinese Journal of Obstetrics and Gynecology, Volume 53, Issue 10,2018, Pages 719-720, doi:10.3760/cma.j.issn.0529-567x.2018.10.014
Chinese Journal of Obstetrics and Gynecology, Volume 53, Issue 10,2018, Pages 718-719, doi:10.3760/cma.j.issn.0529-567x.2018.10.013