CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 05,2007, Pages 289-290, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 05,2007, Pages 291-293, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 05,2007, Pages 294-297, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 05,2007, Pages 298-301, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 05,2007, Pages 302-304, Dol: