Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 7,2016, Pages 497-497,
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 7,2016, Pages 541-543, doi:10.3760/cma.j.issn.0529-567x.2016.07.012
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 7,2016, Pages 544-546, doi:10.3760/cma.j.issn.0529-567x.2016.07.013
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 7,2016, Pages 481-483, doi:10.3760/cma.j.issn.0529-567x.2016.07.001
Chinese Journal of Obstetrics and Gynecology, Volume 51, Issue 7,2016, Pages 510-514, doi:10.3760/cma.j.issn.0529-567x.2016.07.006