Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 5,2013, Pages 358-361, doi:10.3969/j.issn.1003-6946.2013.05.015
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 5,2013, Pages 373-375, doi:10.3969/j.issn.1003-6946.2013.05.019
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 5,2013, Pages 324-326, doi:10.3969/j.issn.1003-6946.2013.05.002
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 5,2013, Pages 376-379, doi:10.3969/j.issn.1003-6946.2013.05.020
Journal of Practical Obstetrics and Gynecology, Volume 29, Issue 5,2013, Pages 398-399, doi:10.3969/j.issn.1003-6946.2013.05.029