CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 04,2007, Pages 217-218, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 04,2007, Pages 219-221, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 04,2007, Pages 222-226, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 04,2007, Pages 227-232, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 42, Issue 04,2007, Pages 233-235, Dol: