CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 08,2005, Pages 505-507, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 08,2005, Pages 508-510, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 08,2005, Pages 511-515, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 08,2005, Pages 516-520, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 08,2005, Pages 521-524, Dol: