JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 27, Issue 9,2011, Pages 716-716, doi:10.3969/j.issn.1003-6946.2011.09.027
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JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 27, Issue 9,2011, Pages 707-709, doi:10.3969/j.issn.1003-6946.2011.09.022
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 27, Issue 9,2011, Pages 665-669, doi:10.3969/j.issn.1003-6946.2011.09.010