CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 08,2006, Pages 507-508, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 08,2006, Pages 509-513, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 08,2006, Pages 514-517, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 08,2006, Pages 518-520, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 08,2006, Pages 521-524, Dol: