1. Cardiovascular Division, Brigham and Women’s Hospital, 75 Francis Street, Boston, MA, USA
2. Department of Cardiology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Bispebjerg Bakke 23, Denmark
3. The Unit for Inherited Cardiac Diseases, The Heart Center, Rigshospitalet, Copenhagen Health Science Partners, Copenhagen University, Blegdamsvej 9, Denmark
4. Division of General Medicine, Brigham and Women’s Hospital, Boston, 75 Francis Street, MA USA
5. Cardiology Division, Massachusetts General Hospital, 32 Fruit Street, Boston, MA, USA