1. From the Department of Cardiology, Regional Hospital Liberec, Liberec, Czech Republic (T.R., P.K., P.N., J. Kupec, J. Sedlakova, J.C., J. Stros, R.P.); Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic (D.W., J. Kautzner); and Institute of Health Studies, Technical University of Liberec, Liberec, Czech Republic (D.W., J. Kautzner, R.P.).