共 11 条
[2]
BODDY K, 1975, MODERN PERINATAL MED, P381
[3]
BURT RL, 1965, OBSTET GYNECOL, V25, P43
[5]
GOODMAN JDS, 1980, BRIT J OBSTET GYNAEC, V87, P1080, DOI 10.1111/j.1471-0528.1980.tb04476.x
[8]
NATALE R, 1981, OBSTET GYNECOL, V59, P320
[9]
PATRICK J, 1980, OBSTET GYNECOL, V56, P24