CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 3,2010, Pages 227-229, doi:10.3760/cma.j.issn.0529-567x.2010.03.018
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 3,2010, Pages 224-226, doi:10.3760/cma.j.issn.0529-567x.2010.03.017
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 3,2010, Pages 218-220, doi:10.3760/cma.j.issn.0529-567x.2010.03.015
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 45, Issue 3,2010, Pages 237-238, doi:10.3760/cma.j.issn.0529-567x.2010.03.022