1. From the Cardiovascular Centre Aalst (M.H., J.S., T.C., G.S., N.M., A.N., O.M., E.B., B.D.E., J.B., W.W.), Belgium; the Department of Cardiology (M.O., B.B.), University Institute for Cardiovascular Diseases, Clinical Center of Serbia, Serbia; and Institute for Cardiovascular Disease (D.S.), Dedinje, Serbia.