CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 07,2005, Pages 433-434, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 07,2005, Pages 435-437, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 07,2005, Pages 438-440, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 07,2005, Pages 441-444, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 07,2005, Pages 445-448, Dol: