1. From the Department for Cardiology and Angiology, Heart Center University of Freiburg, Albert-Ludwigs University Freiburg, Freiburg, Germany (J.S.E., S.R., M.D., C.B., M.M.); UNC McAllister Heart Institute, Department of Medicine, University of North Carolina, Chapel Hill (C.P.); and New York-Presbyterian Hospital/Weill-Cornell Medical Center, New York, NY (C.P.).