1. Center for Preventive Cardiology, Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR (P.A.M., H.T., K.H., I.G., S.F.).
2. Division of Cardiovascular Medicine (L.Z., M.F.L.)
3. Division of Diabetes, Metabolism and Endocrinology, Department of Medicine, Vanderbilt University Medical Center (L.Z., J.M.S.)
4. Tennessee Valley Healthcare System, Nashville, TN (L.Z., J.M.S.).