1. Division of Vascular and Endovascular Surgery (E.L.C.), Massachusetts General Hospital, Boston.
2. Cardiovascular Research Center (E.L.C., J.P.P., C.L.L.C., E.M.I., P.T.E., M.E.L.), Massachusetts General Hospital, Boston.
3. Cardiovascular Disease Initiative (E.L.C., M.C., B.S., J.P.P., M.N., C.N., P.T.E., M.E.L.), Broad Institute, Cambridge, MA.
4. Precision Cardiology Laboratory (M.C., B.S., J.P.P., C.N., P.T.E.), Broad Institute, Cambridge, MA.
5. Cardiology Division (J.P.P., C.L.L.C., E.M.I., P.T.E., M.E.L.), Massachusetts General Hospital, Boston.
6. Demoulas Center for Cardiac Arrhythmias (J.P.P., M.N., P.T.E.), Massachusetts General Hospital, Boston.
7. Precision Cardiology Laboratory, Bayer US LLC, Cambridge, MA (A.-D.A., C.K.).
8. Perelman School of Medicine, University of Pennsylvania, Philadelphia (K.C.B., K.B.M.).
9. Cancer Center (D.J.), Massachusetts General Hospital, Boston.
10. Department of Pathology (J.R.S.), Massachusetts General Hospital, Boston.
11. Thoracic Aortic Center (E.M.I., M.E.L.), Massachusetts General Hospital, Boston.