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Keyword
birth defects
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8
neural tube defects
3
alcohol
2
case-control study
2
epidemiology
2
folic acid
2
spina bifida
2
Fontan
1
Hispanics
1
NBDPS
1
Prevalence
1
Single-ventricle
1
anencephaly
1
case-control
1
china
1
congenital diaphragmatic hernia
1
infant mortality
1
insurance status
1
interview
1
level of lesion
1