JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 21, Issue 11,2005, Pages 650-652, doi:10.3969/j.issn.1003-6946.2005.11.005
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 21, Issue 11,2005, Pages 702-702, doi:10.3969/j.issn.1003-6946.2005.11.029
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 21, Issue 11,2005, Pages 676-679, doi:10.3969/j.issn.1003-6946.2005.11.015
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 21, Issue 11,2005, Pages 648-650, doi:10.3969/j.issn.1003-6946.2005.11.004
JOURNAL OF PRACTICAL OBSTETRICS AND GYNECOLOGY, Volume 21, Issue 11,2005, Pages 699-700, doi:10.3969/j.issn.1003-6946.2005.11.025