1. Division of Cardiology, University of Southern California, Keck School of Medicine, Los Angeles (G.P.).
2. Division of Cardiovascular Medicine, University of California San Diego (B.H., A.T., A.M.A.).
3. Department of Surgery & Cancer, Imperial College London (G.T., P.A.-L., P.J.T.).
4. Division of Cardiology, Department of Medicine, University of Washington, Seattle (D.D.).
5. CVPath Institute, Gaithersburg, MD (V.R.).
6. Queensland Research Centre for Peripheral Vascular Disease, James Cook University and Townsville University Hospital, Australia (G.J.).