1. Department of Internal Medicine (E.Y.D), The Johns Hopkins University School of Medicine, Baltimore, MD.
2. Ciccarone Center for the Prevention of Cardiovascular Disease (M.C.-A., E.D.M.), The Johns Hopkins University School of Medicine, Baltimore, MD.
3. Welch Center for Prevention, Epidemiology and Clinical Research, The Johns Hopkins University, Baltimore, MD (E.D.M.).