CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 5,2010, Pages 392-394, doi:10.3760/cma.j.issn.0529-567x.2010.05.020
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 5,2010, Pages 367-371, doi:10.3760/cma.j.issn.0529-567x.2010.05.011
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 5,2010, Pages 338-341, doi:10.3760/cma.j.issn.0529-567x.2010.05.005
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 5,2010, Pages 386-387, doi:10.3760/cma.j.issn.0529-567x.2010.05.017
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 5,2010, Pages 363-366, doi:10.3760/cma.j.issn.0529-567x.2010.05.010