1. McNulty H , Pentieva K . Folate bioavailability. In: Bailey L (ed). Folate in Health and Disease , 2nd edn. Boca Raton, FL: Taylor & Francis Group, L.L.C., 2010.
2. Folic acid in pregnancy and fetal outcomes
3. Institute of Medicine. DRI Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline . Washington, DC: National Academies Press, 1998.
4. Prevention of neural tube defects: Results of the Medical Research Council Vitamin Study
5. Prevention of the First Occurrence of Neural-Tube Defects by Periconceptional Vitamin Supplementation