1 Cardiovascular Clinical Research Center, Leon H. Charney Division of Cardiology, Department of Medicine, New York University Grossman School of Medicine (J.B.-A.L., M.P., J.S.H., H.R.R.).
2 Cleerly Inc, New York, NY (J.K.M.).
3 Echocardiography Laboratory, Division of Cardiology, Massachusetts General Hospital, Boston (M.H.P.).
4 Hospital Universitario A Coruña, Universidad de A Coruna, Centro de Investigación en Red de Enfermedades Cardiovasculares, A Coruna, Spain (J.P.).
5 Northwick Park Hospital-Royal Brompton Hospital, London, United Kingdom (R.S.).
6 Clinic of Cardiac and Vascular Diseases, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Lithuania (J.C.).
7 Wake Forest University School of Medicine, Winston-Salem, NC (M.D.S.).
8 Mayo Clinic, Rochester, MN (P.A.P.).
9 Department of Interventional Cardiology, Instituto de Cardiologia do Rio Grande do Sul and Hospital Divina Providência, Porto Alegre, Brazil (A.S.d.Q.).
10 Departments of Medicine (Cardiology) and Radiology, University of Ottawa Heart Institute, ON, Canada (B.J.W.C.).
11 Department of Cardiovascular Medicine, Cleveland Clinic, OH (J.E.T.-H.).
12 Department of Medicine, Stanford University School of Medicine, CA (F.R., D.J.M.).
13 National Institutes of Health-National Heart, Lung, and Blood Institute, Bethesda, MD (J.L.F.).