CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 6,2006, Pages 422-423, doi:10.3760/j.issn:0529-567X.2006.06.016
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 6,2006, Pages 399-402, doi:10.3760/j.issn:0529-567X.2006.06.011
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 6,2006, Pages 424-425, doi:10.3760/j.issn:0529-567X.2006.06.017
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 6,2006, Pages 372-374, doi:10.3760/j.issn:0529-567X.2006.06.004
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 6,2006, Pages 412, doi:10.3760/j.issn:0529-567X.2006.06.022