Anemia, MyelophthisicFolic AcidAnemiaFolic Acid DeficiencyNeural Tube DefectsAnemia, MacrocyticTetrahydrofolatesVitamin B 12Dietary SupplementsFood, FortifiedHomocysteineAnemia, AplasticVitamin B ComplexFolic Acid AntagonistsAnemia, HemolyticPreconception CareFanconi AnemiaAnemia, PerniciousHematinicsAnemia, HypochromicAnemia, Hemolytic, AutoimmuneFolate Receptors, GPI-AnchoredHyperhomocysteinemiaAnemia, Megaloblastic