共 15 条
[1]
BILLEWICZ WZ, 1973, J OBSTET GYN BR COMM, V80, P491
[3]
Butler NR, 1969, PERINATAL PROBLEMS 2
[4]
CHAMBERLAIN R, 1975, BRIT BIRTHS 1970, V1
[5]
DONOVAN JW, 1977, BRIT J PREV SOC MED, V31, P6
[6]
FRYER JR, IN PRESS
[7]
GOLDSTEIN H, 1977, LANCET, V1, P1254
[9]
GOLDSTEIN H, 1976, BIOL HUMAN FETAL GRO, P81
[10]
HELLIER J L, 1979, Journal of Epidemiology and Community Health, V33, P183, DOI 10.1136/jech.33.3.183