TY - JOUR AU - Duewer, David AU - Kline, Margaret AU - Sharpless, Katherine AU - Brown, Jeanice AU - Stacewicz-Sapuntzakis, M. AU - Sowell, A. C2 - Analytical Chemistry DA - 2000-08-01 LA - en M1 - 72 PB - Analytical Chemistry PY - 2000 TI - NIST Micronutrients Measurement Quality Assurance Program: Characterizing Individual Participant Measurement Performance over Time ER -