CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 1,2011, Pages 15-18, doi:10.3760/cma.j.issn.0529-567x.2011.01.006
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 1,2011, Pages 32-35, doi:10.3760/cma.j.issn.0529-567x.2011.01.010
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 1,2011, Pages 70-72, doi:10.3760/cma.j.issn.0529-567x.2011.01.021
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 1,2011, Pages 76-78, doi:10.3760/cma.j.issn.0529-567x.2011.01.023
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 1,2011, Pages 5-6, doi:10.3760/cma.j.issn.0529-567x.2011.01.003