1. From the Division of Cardiovascular Medicine (M.W., K.Y.L., S.N.P., S.Z.G., H.A.V., J.P.C.) and the Department of Microbiology and Immunology (T.N.K., E.S.M.), Stanford University School of Medicine, Stanford, Calif; and Medizinische Klinik I (M.W.), University Hospital Munich-Grosshadern, Ludwig Maximilians-University of Munich, Munich, Germany.