1 From the Departments of Medicine (M.J.K.) and Cardiology (A.H.S.), Veterans Administration Long Beach Health Care System, CA; and Department of Medicine, University of California, Irvine (M.J.K., A.H.S.). mkern@uci.edu.
2 From the Departments of Medicine (M.J.K.) and Cardiology (A.H.S.), Veterans Administration Long Beach Health Care System, CA; and Department of Medicine, University of California, Irvine (M.J.K., A.H.S.).