Folic acid deficiency.
D002986:Clinical Trials as Topic; D005260:Female; D005492:Folic Acid / Q000627:therapeutic use*; D005494:Folic Acid Deficiency / Q000517:prevention & control; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control*; D016136:Spina Bifida Occulta / Q000517:prevention & control
D005492:Folic Acid