1. Division of General Internal Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
2. Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA.
3. Cardiovascular Research Center and Cardiac Arrhythmia Service, Corrigan Minehan Heart Center, Massachusetts General Hospital, Boston, Massachusetts, USA.
4. Digital Health eCare, Mass General Brigham, Boston, Massachusetts, USA.
5. Center for Innovation in Digital Healthcare, Massachusetts General Hospital, Boston, Massachusetts, USA.