1. Division of Cardiology, Department of Medicine, University of Colorado School of Medicine, Aurora (N.M.B.).
2. Centre for Cardiovascular Innovation, University of British Columbia, Vancouver, Canada (D.A.W., S.B.L., J.S., J.A.C., M.B., J.G.W., A.C., J.Y.).
3. St Luke’s Mid-America Heart Institute, Kansas City, MO (H.L., K.C., E.A.M.).
4. Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Canada (R.W.).
5. Division of Cardiology, Department of Medicine, Hamilton Health Sciences, McMaster University, Ontario, Canada (J.L.V.).
6. Division of Cardiology, Department of Medicine, University of Toronto, Canada (H.C.W.).
7. Montreal Heart Institute, Quebec, Canada (A.A.).
8. Division of Cardiology, Department of Medicine, Columbia University Medical Center, New York, NY (S.K.).
9. Piedmont Heart Institute, Atlanta, GA (V.H.T.).
10. Cardiovascular Research Foundation, New York, NY (D.J.C.).
11. St Francis Hospital and Heart Center, Roslyn, NY (D.J.C.).