1. From Institute of Cardiology (A.U., P.P., M.P., E.S., T.P., W.T.), Jagiellonian University School of Medicine, Cracow, Poland; Department of Hematology (K.Z., E.H.), Karol Marcinkowski University of Medical Sciences, Poznan, Poland; Department of Cardiology, Joseph Strus Hospital (I.J., M.D.), Poznan, Poland; John Paul II Hospital (M.P., E.S.), Cracow, Poland; Department of Cardiology (E.K.-K., P.W.), Medical University of Silesia, Katowice, Poland.