共 22 条
[1]
CRANE JP, 1980, OBSTET GYNECOL, V55, P678
[2]
DAW E, 1975, BRIT J CLIN PRACT, V29, P150
[5]
DIVERS WA, 1979, OBSTET GYNECOL, V53, P500
[6]
GOTLLICHER S, 1977, GEBUTSCH FRAUENNEDK, V37, P762
[7]
GRENNERT L, 1978, ACTA OBSTET GYNECO S, V78, P28
[10]
HOULTON MCC, 1977, OBSTET GYNECOL, V49, P542