[Folic acid deficiency].
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005247:Feeding Behavior; D005260:Female; D005494:Folic Acid Deficiency / Q000451:nursing* / Q000517:prevention & control; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009436:Neural Tube Defects / Q000451:nursing / Q000517:prevention & control; D009751:Nutritional Requirements; D011247:Pregnancy