TY - JOUR AU - Thienpont, L AU - Van, K AU - Marriot, J AU - Stokes, P AU - Siekmann, L AU - Kessler, A AU - Bunk, David AU - Tai, Susan 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 -