CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 08,2011, Pages 561-563, Dol:10.3760/cma.j.issn.0529-567x.2011.08.001
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 08,2011, Pages 564-569, Dol:10.3760/cma.j.issn.0529-567x.2011.08.002
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 08,2011, Pages 570-573, Dol:10.3760/cma.j.issn.0529-567x.2011.08.003
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 08,2011, Pages 574-577, Dol:10.3760/cma.j.issn.0529-567x.2011.08.004
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 46, Issue 08,2011, Pages 578-581, Dol:10.3760/cma.j.issn.0529-567x.2011.08.005