1. From the Channing Laboratory, Brigham and Women’s Hospital, Department of Medicine, Harvard Medical School (D.R.G.); Department of Environmental Health (D.R.G.) and Epidemiology (M.A.M.), Harvard School of Public Health; and Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Department of Medicine, Harvard Medical School (M.A.M.), Boston, MA.