Journal of Practical Obstetrics and Gynecology, Volume 28, Issue 8,2012, Pages 615-617, doi:10.3969/j.issn.1003-6946.2012.08.004
Journal of Practical Obstetrics and Gynecology, Volume 28, Issue 8,2012, Pages 686-687, doi:10.3969/j.issn.1003-6946.2012.08.027
Journal of Practical Obstetrics and Gynecology, Volume 28, Issue 8,2012, Pages 701-702, doi:10.3969/j.issn.1003-6946.2012.08.033
Journal of Practical Obstetrics and Gynecology, Volume 28, Issue 8,2012, Pages 652-654, doi:10.3969/j.issn.1003-6946.2012.08.017
Journal of Practical Obstetrics and Gynecology, Volume 28, Issue 8,2012, Pages 671-674, doi:10.3969/j.issn.1003-6946.2012.08.023