1. Division of Cardiology (M.T.T., H.L.N., B.H.W., W.H.S., J.K.H.), University of California Los Angeles.
2. Department of Medicine (D.C.), University of California Los Angeles.
3. David Geffen School of Medicine (T.S.), University of California Los Angeles.
4. Department of Biostatistics (D.E.), University of California Los Angeles.