1. American Heart Association Tobacco Regulation and Addiction Center, Dallas, TX (A.C.S., J.L.F., E.J.B., R.M.R., A.B., N.M.H., M.J.B.).
2. Department of Global Health (A.C.S., W.X., A.E.W., H.Y.), Boston University School of Public Health, MA.
3. Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (O.A.O., A.P.D., R.M.R.).
4. Department of Epidemiology (A.F.H., E.J.B.), Boston University School of Public Health, MA.
5. Evans Department of Medicine and Whitaker Cardiovascular Institute (J.L.F., E.J.B., N.M.H.), Boston University School of Public Health, MA.
6. Department of Medicine, University of Louisville, KY (A.B.).
7. Department of Medicine, The Johns Hopkins University, Baltimore, MD (M.J.B.).