Duewer, D.
, Sharpless, K.
, Brown Thomas, J.
and Margolis, S.
(2013),
NIST Micronutrients Measurement Quality Assurance Program Winter 2001 Comparability Studies: Results for Round Robin XLIX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 14 Ascorbic Acid in Human Serum, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.7880-23, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=913893
(Accessed December 12, 2024)