CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 7,2005, Pages 453-456, doi:10.3760/j.issn:0529-567X.2005.07.007
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 7,2005, Pages 452, doi:10.3760/j.issn:0529-567X.2005.07.024
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 7,2005, Pages 484-485, doi:10.3760/j.issn:0529-567X.2005.07.015
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 7,2005, Pages 449-452, doi:10.3760/j.issn:0529-567X.2005.07.006
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 7,2005, Pages 435-437, doi:10.3760/j.issn:0529-567X.2005.07.002