TY - JOUR AU - Michael Welch AU - Reenie Parris AU - Lorna Sniegoski AU - Willie May C2 - Metrologia DA - 2002-12-01 LA - en M1 - 39 PB - Metrologia PY - 2002 TI - CCQM-K6: Key Comparison on the Determination of Cholesterol in Serum ER -