Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 7,2013, Pages 516-518, doi:10.3969/j.issn.1003-6946.2013.07.014
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 7,2013, Pages 503-505, doi:10.3969/j.issn.1003-6946.2013.07.010
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 7,2013, Pages 549-551, doi:10.3969/j.issn.1003-6946.2013.07.024
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 7,2013, Pages 545-548, doi:10.3969/j.issn.1003-6946.2013.07.023
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 7,2013, Pages 556-557, doi:10.3969/j.issn.1003-6946.2013.07.028