1. From the Department of Medicine (S.K., J. Duc, D.A., G.F.T.), Division of Molecular and Cellular Cardiology, Johns Hopkins University, Baltimore, Maryland; Department of Neurobiology and Behavior (J. Dixon, D.M.), State University of New York at Stony Brook; Department of Medicine I (S.K., M.N., G.S.), Ludwig Maximilians University of Munich (Germany); and Department of Medicine III (D.J.B.), University of Cologne (Germany).