TY - GEN AU - Duewer, David L. AU - Thomas, Jeanice B. C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2013-06-01 04:06:00 DO - https://doi.org/10.6028/NIST.IR.7880-17 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2013 TI - NIST micronutrients measurement quality assurance program winter 2004 comparability studies : results for round robin LV fat-soluble vitamins and carotenoids in human serum and round robin 20 ascorbic acid in human serum: ER -