1. Cardiology Clinical Academic Group, St. George’s University of London (B.G., E.R.B.).
2. St George’s University Hospitals NHS Foundation Trust, London, United Kingdom (B.G., E.R.B.).
3. Agnes Ginges Centre for Molecular Cardiology, Centenary Institute (B.G., C.S.).
4. Faculty of Health and Medical Sciences, University of Sydney, NSW, Australia (B.G., C.S.).
5. Departments of Cardiovascular Medicine, Pediatric and Adolescent Medicine, and Molecular Pharmacology and Experimental Therapeutics, Divisions of Heart Rhythm Services and Pediatric Cardiology, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, Rochester, MN (M.J.A.).
6. Department of Cardiology, Royal Prince Alfred Hospital, NSW, Australia (M.J.A.).