CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 09,2006, Pages 577-578, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 09,2006, Pages 579-583, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 09,2006, Pages 584-587, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 09,2006, Pages 588-591, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 09,2006, Pages 592-596, Dol: