JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 22, Issue 5,2006, Pages 316-317, doi:10.3969/j.issn.1003-6946.2006.05.025
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JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 22, Issue 5,2006, Pages 275-277, doi:10.3969/j.issn.1003-6946.2006.05.010
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 22, Issue 5,2006, Pages 318-318, doi:10.3969/j.issn.1003-6946.2006.05.026
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 22, Issue 5,2006, Pages 278-280, doi:10.3969/j.issn.1003-6946.2006.05.011