1. From the Division of Cardiology, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia (S. Selvaraj)
2. Division of Cardiology, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (S. Seidelmann, O.M.S., B.C., S.C., M.M.F.-S., A.M.S., S.D.S.)
3. Department of Medicine, Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD (C.E.N.)
4. Human Genetics Center, Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston (B.Y., M.L.G., E.B.)
5. Baylor College of Medicine, Human Genome Sequencing Center, Houston, TX (E.B.).