CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 02,2002, Pages 65-68, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 02,2002, Pages 69-71, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 02,2002, Pages 72-73, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 02,2002, Pages 74-76, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 02,2002, Pages 77-79, Dol: