1. From the Division of Epidemiology and Clinical Applications, National Heart, Lung, and Blood Institute (E.O., M.A.P., J.A.C.), Bethesda, Md; Kaiser Permanente Center for Health Research (W.M.V.), Portland, Ore; Office of Clinical Research, Boston University Medical Center (T.J.M.), Boston, Mass; Nutrition Department, Harvard School of Public Health (F.M.S.), Boston, Mass; Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins University School of Medicine (L.J.A.), Baltimore,...