CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 02,2005, Pages 73-75, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 02,2005, Pages 76-78, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 02,2005, Pages 79-82, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 02,2005, Pages 83-86, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 02,2005, Pages 87-90, Dol: