1. From the Institute of Cardiology (A.U., Z.S.) and Department of Medicine (A.U., J.B., M.J., A.S.), Jagiellonian University School of Medicine, Krakow, Poland; Institute of Bioorganic Chemistry (H.J.), Polish Academy of Sciences, Poznań, Poland; and Department of Microbiology and Molecular Genetics (H.J.), UMDNJ-New Jersey Medical School, International Center for Public Health, Newark, NJ.