TY - JOUR AU - L Thienpont AU - K Van AU - J Marriot AU - P Stokes AU - L Siekmann AU - A Kessler AU - David Bunk AU - Susan Tai C2 - Clinical Chemistry DA - 2004-11-18 LA - en M1 - 51 PB - Clinical Chemistry PY - 2004 TI - Metrologic Traceability of Total Thyroxine Measurements in Human Serum: Efforts to Establish a Network of Reference Measurement Laboratories ER -