1. From the Dietary Assessment and Epidemiology Research Program (SS and KLT) and the Antioxidants Research Laboratory (JB), Jean Mayer US Department of Agriculture, HNRCA, Tufts University, Boston, MA; the Institute for Aging Research, Hebrew SeniorLife, Boston, MA (MTH and DPK); and the Department of Biostatistics, School of Public Health, Boston University, Boston, MA (LAC).