CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 09,2004, Pages 577-578, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 09,2004, Pages 579-581, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 09,2004, Pages 582-585, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 09,2004, Pages 586-590, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 09,2004, Pages 591-594, Dol: