1. Division of Cardiology, University of Washington, Seattle (J.M.M., W.L.).
2. Ascension St. John Heart and Vascular Institute, Detroit, MI (A.A.K., T.S.).
3. Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, MA (D.S.P.).
4. Division of Cardiology, Columbia Presbytarian Medical Center, New York, NY (A.J.K., J.W.M.).
5. Division of Cardiology, Emory University Medical Center, Atlanta, GA (W.J.N.).
6. St. Luke’s Mid America Heart Institute, Kansas City, MO (J.A.G.).
7. Torrance Memorial Medical Center, CA (R.M.W.).
8. Department of Medicine (A.K.O.), RWJ Barnabas Health, Newark, NJ.
9. Carondelet Health Network, Tucson, AZ (R.S., K.L.).
10. Division of Cardiology, Tufts University Medical Center, Boston, MA (N.K.K.).
11. Division of Cardiology (R.T.), RWJ Barnabas Health, Newark, NJ.