共 9 条
- [1] ANDREWS J, 1972, J OBSTET GYN BR COMM, V79, P1057
- [2] COLE PV, 1972, J OBSTET GYN BR COMM, V79, P782
- [3] DAVIES, 1976, LANCET, V1, P385
- [7] RAPID ASSESSMENT OF GESTATIONAL AGE AT BIRTH [J]. ARCHIVES OF DISEASE IN CHILDHOOD, 1976, 51 (04) : 259 - 263
- [8] RUSH D, 1974, J OBSTET GYN BR COMM, V81, P746