SelhubJJacquesPFDallalGChoumenkovitchSRogersG. The use of a combination of blood concentrations of vitamins and their respective functional indicators to define folate and vitamin B12 status. Food Nutr Bull2008;29:S67–73.
2.
Institute of Medicine of the National Academies of Science. Dietary reference intake for thiamine, riboflavin, niacin, vitamin B6, folate, vitamin B12, panthotenic acid, biotine and choline. Washington, DC: National Academies Press, 1998.
3.
BorjelAKNilssonTKHurtig-WenloffAYngveASjostromM. Plasma homocysteine levels, MTHFR polymorphisms 677C→T, 1298A→C, 1793G→A, and school achievement in a population sample of Swedish children. Haematol Rep2005;1(3):4.
4.
DagneliePCVan StaverenWAVergoteFJDingjanPGvan den BergHHautvastJG. Increased risk of vitamin B12 and iron deficiency in infants on macrobiotic diets. Am J Clin Nutr1989;50:818–24.
5.
AllenLde BenoistBDaryOHurrellR, eds. Food fortification with micronutrients. Geneva: World Health Organization, 2006.