1. From the Center for Human Genetic Research and Cardiovascular Research Center, Massachusetts General Hospital, Boston (C.N.-C.); Broad Institute of Harvard and MIT, Cambridge, Mass (C.N.-C.); Center for Arrhythmia Prevention (C.M.A.), Division of Preventive Medicine (N.R.C., M.V., P.M.R., C.M.A), Channing Laboratory (E.B.R.), and Cardiovascular Division (C.M.A., P.M.R.), Department of Medicine, Brigham and Women’s Hospital (C.M.A.), Harvard Medical School, Boston, Mass; and Departments of Nutrition ...