1. From the HELIOS Heart Center Siegburg, Departments of Cardiology (E.G., U.G., L.B., R.M., M.M., T.S.), Cardiac Surgery (T.F., S.I.), and Anesthesiology (B.S., B.Z.), Siegburg, Germany; Clinique Pasteur, Toulouse, France (J.C.L.); and Columbia University Medical Center and the Cardiovascular Research Foundation, New York, NY (G.W.S.).