CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 05,2005, Pages 289-290, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 05,2005, Pages 291-294, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 05,2005, Pages 295-298, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 05,2005, Pages 299-301, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 05,2005, Pages 302-305, Dol: