CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 04,2006, Pages 217-218, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 04,2006, Pages 219-221, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 04,2006, Pages 222-225, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 04,2006, Pages 226-228, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 04,2006, Pages 229-232, Dol: