1. From the Third Faculty of Medicine, Charles University, Prague, Czech Republic (P.W., R.P., P.T., H.L., T.B., L.L., V.K.); Department of Cardiology, University Hospital Kralovske Vinohrady, Prague (P.W., R.P., P.T., H.L., T.B., L.L., V.K.); and Department of Cardiology, Central Military Hospital, Prague, Czech Republic (M.M., J.V., M.H.).