CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 10,2006, Pages 701-705, doi:10.3760/j.issn:0529-567X.2006.10.014
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 10,2006, Pages 652-655, doi:10.3760/j.issn:0529-567X.2006.10.002
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 10,2006, Pages 714-714, doi:10.3760/j.issn:0529-567X.2006.10.018
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 10,2006, Pages 697-700, doi:10.3760/j.issn:0529-567X.2006.10.013
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 41, Issue 10,2006, Pages 706-709, doi:10.3760/j.issn:0529-567X.2006.10.015