1. From the Department of Cardiology, Cliniques Universitaires de Bruxelles, Hôpital Académique Erasme, Brussels, Belgium (R.N., J.-L.V., S.C.); Department of Internal Medicine II, Division of Cardiology, General Hospital of Vienna (AKH-Wien), Medical University of Vienna, Austria (M.G., C.G., I.M.L.); and Department of Cardiovascular, Neural and Metabolic Sciences, Ospedale S. Luca IRCCS Istituto Auxologico Italiano, Milan, Italy (S.C.).