Neural-tube defects.
Werler
M M
MM
Mitchell
A A
AA
D002681:China; D019587:Dietary Supplements; D005492:Folic Acid / Q000008:administration & dosage*; D006801:Humans; D009436:Neural Tube Defects / Q000517:prevention & control*; D018673:Nutrition Policy; D016742:Preconception Care; D014481:United States
D005492:Folic Acid