Investigation of folic acid requirements in pregnancy.
D000748:Anemia, Macrocytic / Q000453:epidemiology; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage* / Q000097:blood / Q000378:metabolism*; D006801:Humans; D011247:Pregnancy; D011250:Pregnancy Complications, Hematologic / Q000188:drug therapy*
D005492:Folic Acid