1 Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
2 Division of Internal Medicine, Forrest General Hospital, Hattiesburg, Massachusetts.
3 Department of Cardiology, Kaiser Permanente San Francisco Medical Center, San Francisco, California; Division of Research, Kaiser Permanente Northern California, Oakland, California.
4 Duke Clinical Research Institute and Division of Cardiology, North Carolina; Duke University Medical Center, Durham, North Carolina.
5 Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address: mvaduganathan@bwh.harvard.edu.