CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 2,2003, Pages 65-68, doi:10.3760/j.issn:0529-567X.2003.02.001
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 2,2003, Pages 92-93, doi:10.3760/j.issn:0529-567X.2003.02.008
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 2,2003, Pages 112-112, doi:10.3760/j.issn:0529-567X.2003.02.017
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 2,2003, Pages 103-105, doi:10.3760/j.issn:0529-567X.2003.02.012
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 2,2003, Pages 107-108, doi:10.3760/j.issn:0529-567X.2003.02.014