Schaefer Ernst J
Lipid and Heart Disease Prevention Clinic and Lipid Metabolism Laboratory, Tufts University School of Medicine, and Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111, USA.
Clin Chem. 2010 Apr;56(4):502-4. doi: 10.1373/clinchem.2009.139196. Epub 2010 Feb 25.