1. Cardiovascular Division, Brigham and Women’s Hospital, Boston, MA. (P.L.M., B.L.C., I.E.B., E.L., S.D.S., M.A.P., A.S.D.)
2. Division of Medicine, Akershus University Hospital, Lørenskog and University of Oslo, Norway (P.L.M.).
3. Montreal Heart Institute, Canada (E.O., S.d.D., J.L.R.).
4. Department of Pathology, Brigham and Women’s Hospital, Boston, MA. (P.J.)
5. Department of Cardiovascular Medicine, University of Minnesota, MN (I.S.A.).
6. Division of Cardiovascular Diseases, National Heart, Lung, and Blood Institute, Bethesda, MD (J.L.F.).
7. Division of Cardiology, University of Michigan School of Medicine, Ann Arbor (B.P.)