Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 9,2016, Pages 666-671, doi:10.3760/cma.j.issn.0529-567x.2016.09.006
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 9,2016, Pages 714-717, doi:10.3760/cma.j.issn.0529-567x.2016.09.019
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 9,2016, Pages 671-671, doi:10.3969/j.issn.0529-567X.2016.09.009
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 9,2016, Pages 641-642, doi:10.3760/cma.j.issn.0529-567x.2016.09.001
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 9,2016, Pages 717-717,