From the Centers for Disease Control and Prevention. Use of folic acid-containing supplements among women of childbearing age--United States, 1997.
D000328:Adult; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage*; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D012959:Socioeconomic Factors; D014481:United States
D005492:Folic Acid