TY - JOUR AU - Lorna Sniegoski AU - Bryant Nelson AU - Mary Satterfield AU - Nien Zhang AU - Adriana Hornikova AU - Michael Welch AU - Christine Pfeiffer C2 - Clinical Chemistry DA - 2005-11-01 LA - en M1 - 51 PB - Clinical Chemistry PY - 2005 TI - Development of a Serum-Based Standard Reference Material with Certified Values for Homocysteine and Folate ER -