1. From the Quebec Heart and Lung Institute, Quebec City, Quebec, Canada (J.-R.C., P.P., E.D.); Mayo Clinic, Rochester, MN (R.M.S.); Columbia University Medical Center/NewYork Presbyterian Hospital (S.K., R.T.H., M.B.L.); Emory University School of Medicine, Atlanta, GA (V.H.T.); Hospital of the University of Pennsylvania, Philadelphia (W.Y.S.); Cleveland Clinic, OH (L.G.S.); and Cardiovascular Research Foundation, New York, NY (K.X.).