共 6 条
[1]
SMITHELLS RW, 1976, ARCH DIS CHILD, V51, P944, DOI 10.1136/adc.51.12.944
[2]
NEURAL-TUBE DEFECTS AND VITAMINS - THE NEED FOR A RANDOMIZED CLINICAL-TRIAL
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1985, 92 (02)
:185-186
[3]
SMITHELLS RW, 1983, LANCET, V1, P1027
[5]
NEURAL-TUBE DEFECTS AND VITAMINS - THE NEED FOR A RANDOMIZED CLINICAL-TRIAL
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1984, 91 (06)
:516-523
[6]
YATES JRW, 1987, CLIN GENET, V31, P279