CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 09,2003, Pages 529-529, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 09,2003, Pages 530-533, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 09,2003, Pages 534-537, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 09,2003, Pages 538-540, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 09,2003, Pages 541-544, Dol: