1. Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital (K.R.C.).
2. Program in Medical and Population Genetics and the Cardiovascular Disease Initiative, Broad Institute of Harvard, Cambridge (K.R.C., M.M.U., M.C.H., T.G., Y.R., P.N.).
3. Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA (K.R.C., M.M.U., M.C.H., T.G., P.N.).
4. Cardiology Division, Massachusetts General Hospital (M.C.H., T.G., P.N.).
5. Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston (M.C.H., T.G., P.N.).