1. From the Department of Cardiologic, Thoracic and Vascular Sciences (E.O., A.M., G.F., R.B., S.I., F.T.), Department of Medical and Surgical Sciences (F.F., M.R.P., N.S.), and Department of Radiology (F.C.), University of Padova, Padova, Italy; Cardiology and Cardiovascular Research, Institute of Physiology and University Hospital Zurich, Zurich, Switzerland (E.O., T.F.L.); and Department of Cardiology, University of Cagliari, Cagliari, Italy (R.M.).