1. Department of Cardiovascular Medicine, University of Kansas Medical Center, Kansas City (M.M.).
2. Quantitative Health Sciences, Lerner Research Institute (L.G.T.), Cleveland Clinic, OH.
3. Department of Cardiovascular Medicine (L.G.T., T.H., S.R.K., R.P.), Cleveland Clinic, OH.
4. Franciscan Health, Lafayette, IN; Krannert Cardiovascular Research Center, Indiana University School of Medicine, Indianapolis, IN (A.K.).