From the Centers for Disease Control and Prevention. Knowledge and use of folic acid by women of childbearing age--United States, 1997.
D000328:Adult; D005260:Female; D005492:Folic Acid; D005527:Food, Fortified; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D009436:Neural Tube Defects / Q000517:prevention & control*; D009747:Nutritional Physiological Phenomena; D016742:Preconception Care; D011247:Pregnancy; D011295:Prenatal Care; D014481:United States
D005492:Folic Acid