CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 12,2001, Pages 709-710, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 12,2001, Pages 711-713, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 12,2001, Pages 714-716, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 12,2001, Pages 717-720, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 12,2001, Pages 721-722, Dol: