1. From the Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT (Y.K., J.W., S.R.G., D.L.M., J.d.K., H.P., S.w.J., J.H., H.J.C.); Department of Life Systems, Sookmyung Women's University, Seoul, Korea (J.K.); and Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA (J.P.A., R.K.K., T.Q.).