%0 Journal Article %T Serum unmetabolized folic acid in a nationally representative sample of adults ¡Ý60 years in the United States, 2001¨C2002 %A Regan L. Bailey %A James L. Mills %A Elizabeth A. Yetley %A Jaime J. Gahche %J Food & Nutrition Research %D 2012 %I Co-Action Publishing %R 10.3402/fnr.v56i0.5616 %K folic acid %K folate %K NHANES %K folic acid fortification %U http://www.foodandnutritionresearch.net/index.php/fnr/article/view/5616/21384