CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 04,2002, Pages 193-194, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 04,2002, Pages 195-197, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 04,2002, Pages 198-201, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 04,2002, Pages 202-204, Dol:
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 37, Issue 04,2002, Pages 205-207, Dol: