TY - RPRT TI - NIST Micronutrients Measurement Quality Assurance Program Winter 2012 Comparability Studies: Results for Round Robin LXXI Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 36 Ascorbic Acid in Human Serum AU - Duewer, David L. AU - Thomas, Jeanice B. AU - Camell, Dennis PY - 2012 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7880 DO - 10.6028/NIST.IR.7880 ER -