1. From the Johns Hopkins University, Baltimore, MD (C.C.N., H.T.M., H.D.V., Q.N.A., J.A.C.L.)
2. Department of Family Medicine and Community Health, Duke University, NC (Y.Y., A.J.V.)
3. Department of Public Health, Texas Tech University Health Sciences Center (D.A.)
4. Divisions of Cardiology and Research, Kaiser Permanente Northern California, Oakland (J.S.R.)
5. Harvard Medical School, Boston, MA (R.V.S.)
6. University of Michigan, Ann Arbor (V.L.M.)
7. Northwestern University Feinberg School of Medicine, Chicago, IL (N.B.A., D.M.L.-J.)
8. University of Minnesota School of Public Health, Minneapolis (P.J.S.).