CHINESE JOUNAL OF OBSTETRICS AND GYNECOLOGY, , Issue 6,1998, Pages 384, doi:10.3760/j.issn:0529-567X.1998.06.029
CHINESE JOUNAL OF OBSTETRICS AND GYNECOLOGY, , Issue 6,1998, Pages 325, doi:10.3760/j.issn:0529-567X.1998.06.001
CHINESE JOUNAL OF OBSTETRICS AND GYNECOLOGY, , Issue 6,1998, Pages 349, doi:10.3760/j.issn:0529-567X.1998.06.009
CHINESE JOUNAL OF OBSTETRICS AND GYNECOLOGY, , Issue 6,1998, Pages 334, doi:10.3760/j.issn:0529-567X.1998.06.004
CHINESE JOUNAL OF OBSTETRICS AND GYNECOLOGY, , Issue 6,1998, Pages 331, doi:10.3760/j.issn:0529-567X.1998.06.003