CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 9,2003, Pages 577-578, doi:10.3760/j.issn:0529-567X.2003.09.019
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 9,2003, Pages 563-566, doi:10.3760/j.issn:0529-567X.2003.09.011
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 9,2003, Pages 584-585, doi:10.3760/j.issn:0529-567X.2003.09.023
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 9,2003, Pages 529-529, doi:10.3760/j.issn:0529-567X.2003.09.001
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 38, Issue 9,2003, Pages 552-555, doi:10.3760/j.issn:0529-567X.2003.09.008