1. From the Division of Cardiology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA (B.H.W., Y.M., A.C.C., E.J.S., R.G.F., J.M.T.)
2. Department of Internal Medicine, UNLV School of Medicine, Las Vegas, NV (N.N.)
3. California Northstate University College of Medicine, Elk Grove (C.G.L.)
4. UCLA Department of Neurology, Los Angeles, CA (J.L.S., D.S.L., A.C.).