No abstract available
Publication types
-
Research Support, N.I.H., Intramural
MeSH terms
-
Female
-
Folic Acid / administration & dosage*
-
Folic Acid / pharmacology
-
Food, Fortified / standards*
-
Humans
-
Neural Tube Defects / epidemiology
-
Neural Tube Defects / prevention & control*
-
United States / epidemiology
-
United States Public Health Service