CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 3,2004, Pages 159-161, doi:10.3760/j.issn:0529-567X.2004.03.005
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 3,2004, Pages 169-172, doi:10.3760/j.issn:0529-567X.2004.03.008
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 3,2004, Pages 210-211, doi:10.3760/j.issn:0529-567X.2004.03.024
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 3,2004, Pages 196, doi:10.3760/j.issn:0529-567X.2004.03.028
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 39, Issue 3,2004, Pages 195-196, doi:10.3760/j.issn:0529-567X.2004.03.019