CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 04,2001, Pages 202-205, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 04,2001, Pages 206-208, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 04,2001, Pages 209-211, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 04,2001, Pages 212-214, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 36, Issue 04,2001, Pages 215-217, Dol: