TY - RPRT TI - NIST micronutrients measurement quality assurance program winter, spring, and fall 1997 comparability studies : results for round robin XXXIX, XL, and XLI fat-soluble vitamins and carotenoids in human serum and round robin 10 ascorbic acid in human serum AU - Duewer, David L. AU - Margolis, Sam A. AU - Sharpless, Katherine E. AU - Thomas, Jeanice B. AU - Kline, Margaret C. PY - 2013 PB - National Institute of Standards and Technology SN - NIST IR 7880-27 DO - 10.6028/NIST.IR.7880-27 ER -