TY - GEN AU - David L. Duewer AU - Jeanice B. Thomas C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2013-04-01 04:04:00 DO - https://doi.org/10.6028/NIST.IR.7880-7 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2013 TI - NIST micronutrients measurement quality assurance program winter 2009 comparability studies : results for round robin LXV fat-soluble vitamins and carotenoids in human serum and round robin 30 ascorbic acid in human serum: ER -