Bailey RL, Mills JL, Yetley EA, Gahche JJ, Pfeiffer CM, Dwyer JT, Dodd KW, Sempos CT, Beth JM, Picciano MF. Serum unmetabolized folic acid in a nationally representative sample of adults ≥ 60 years in the United States, 2001-2002. fnr [Internet]. 2012Apr.2 [cited 2024Nov.27];00. Available from: https://foodandnutritionresearch.net/index.php/fnr/article/view/510