共 26 条
[2]
BLONDEL B, 1982, INEGALITES SOCIALES
[3]
BUTLER N, 1975, PERINATAL MORBIDITY
[4]
Campbell S., 1982, J PSYCHOSOM OBST GYN, V1, P57, DOI [DOI 10.3109/01674828209081226, 10.3109/01674828209081226]
[5]
CHALMERS I, 1980, BRIT MED J, V1, P842
[6]
CHAMBERLAIN R, 1975, BIRTH BIRTHS 1970, V1
[7]
CHEZ RA, 1981, PRETERM LABOUR, P124
[8]
ESTRYN M, 1978, REV FRAN GYNECOL, V73, P625
[9]
GARN J, 1977, EPIDEMIOLOGY PREMATU, P127