CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 03,2001, Pages 133-136, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 03,2001, Pages 137-139, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 03,2001, Pages 140-142, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 03,2001, Pages 143-145, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 03,2001, Pages 146-149, Dol: