Folic acid fortification.
Meyer
R E
RE
Oakley
G P
GP
D005260:Female; D005492:Folic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D005527:Food, Fortified; D006801:Humans; D007231:Infant, Newborn; D009436:Neural Tube Defects / Q000453:epidemiology / Q000517:prevention & control*; D009657:North Carolina / Q000453:epidemiology; D011159:Population Surveillance; D011247:Pregnancy; D015995:Prevalence
D005492:Folic Acid