CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 03,2003, Pages 129-131, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 03,2003, Pages 132-135, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 03,2003, Pages 136-139, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 03,2003, Pages 140-142, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 03,2003, Pages 143-146, Dol: