| Daniel E Singer | Division of General Internal Medicine Massachusetts General Hospital MA. |
| Daniel E Singer | Department of Medicine Harvard Medical School Boston MA. |
| Patrick T Ellinor | Cardiovascular Research Center and Cardiac Arrhythmia Service Division of Cardiology Massachusetts General Hospital Boston MA. |
| Patrick T Ellinor | Cardiovascular Research Center and Cardiac Arrhythmia Service Division of Cardiology Massachusetts General Hospital Boston MA. |
| Steven A Lubitz | Cardiovascular Research Center and Cardiac Arrhythmia Service Division of Cardiology Massachusetts General Hospital Boston MA. |
| Steven A Lubitz | Cardiovascular Research Center and Cardiac Arrhythmia Service Division of Cardiology Massachusetts General Hospital Boston MA. |