共 27 条
[4]
CEDERBAUM SD, 1978, PREVENTION NEURAL TU, P91
[5]
Elwood JM, 1980, EPIDEMIOLOGY ANENCEP
[6]
THE PREVALENCE OF NEURAL-TUBE DEFECTS AMONG ETHNIC-GROUPS IN BROOKLYN, NEW-YORK
[J].
JOURNAL OF CHRONIC DISEASES,
1982, 35 (01)
:53-60
[7]
FIELD B, 1974, LANCET, V2, P964
[8]
Gittelsohn AM, 1965, GENETICS EPIDEMIOLOG, P305
[9]
GRANROTH G, 1977, BRIT J PREV SOC MED, V31, P164