TY - JOUR AU - S Margolis AU - M Vangel AU - David Duewer C2 - Clinical Chemistry DA - 2003-01-01 LA - en M1 - 49 PB - Clinical Chemistry PY - 2003 TI - Certification of Standard Reference Material 970, Ascorbic Acid in Serum, and Analysis of Associated Interlaboratory Bias in the Measurement Process ER -