1. From the Departments of Coronary Disease (G.G., J.Z., P.R., J.N., W.P.) and Experimental Cardiac Surgery and Cardiology (G.G., A.U.), Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland; John Paul II Hospital, Krakow, Poland (G.G., J.Z., J.N., A.U.).