CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 04,2004, Pages 217-220, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 04,2004, Pages 221-223, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 04,2004, Pages 224-226, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 04,2004, Pages 227-229, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 04,2004, Pages 230-233, Dol: