CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 721-722, doi:10.3760/j.issn:0529-567X.2005.11.001
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 782-793, doi:10.3760/j.issn:0529-567X.2005.11.019
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 756-760, doi:10.3760/j.issn:0529-567X.2005.11.011
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 775-776, doi:10.3760/j.issn:0529-567X.2005.11.015
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 791-792, doi:10.3760/j.issn:0529-567X.2005.11.023