1. From the Population Health Research Institute and Division of Cardiology (S.Y., S.R.M., F.Z.), McMaster University, Hamilton, Canada; Mayo Clinic (B.G.), Rochester, Minn; University of Cape Town (P.C.), Cape Town, South Africa; Bristol-Myers Squibb (M.B.), Princeton, NJ; Postgraduate Medical School (A.B.), Grochowski Hospital, Warsaw, Poland; University of Mainz (T.W.), Mainz, Germany; and University of Edinburgh (K.A.A.F.), Edinburgh, UK.