CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 2,2005, Pages 76-78, doi:10.3760/j.issn:0529-567X.2005.02.002
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 2,2005, Pages 134-136, doi:10.3760/j.issn:0529-567X.2005.02.020
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 2,2005, Pages 106-108, doi:10.3760/j.issn:0529-567X.2005.02.010
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 2,2005, Pages 142-143, doi:10.3760/j.issn:0529-567X.2005.02.022
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 2,2005, Pages 124-125, doi:10.3760/j.issn:0529-567X.2005.02.015