CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 02,2004, Pages 73-75, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 02,2004, Pages 76-79, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 02,2004, Pages 80-82, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 02,2004, Pages 83-85, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 02,2004, Pages 86-90, Dol: