1. Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Division of Pediatric Cardiology, Department of Pediatric and Adolescent Medicine, and Division of Heart Rhythm Services, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (D.J.C., D.J.T., J.R.G., J.M.B., R.K.R., M.J.A.).
2. Department of Cardiology, Boston Children’s Hospital and Harvard Medical School, MA (D.J.A.).
3. Doernbecher Children’s Hospital, Oregon Health and Science University, Portland (S.B.).
4. Center for Cardiac Arrhythmias of Genetic Origin & Laboratory of Cardiovascular Genetics, Istituto Auxologico Italiano, IRCCS, Milan (L.C., P.J.S.).
5. IRCCS Department of Cardiovascular, Neural & Metabolic Sciences, San Luca Hospital, Istituto Auxologico Italiano (L.C.).
6. Department of Medicine and Surgery University of Milano-Bicocca, Italy (L.C.).
7. Centre Hospitalier Universitaire de Grenoble Alpes (J.F., N.R.-B.).
8. Institut des Neurosciences de Grenoble, INSERM U1216, Grenoble, France (J.F., N.R.-B.).
9. Molecular Cardiology and Medicine Division, Istituti Clinici Scientifici Maugeri, IRCCS (C.N., S.G.P.).
10. Department of Molecular Medicine, University of Pavia, Italy (C.N., S.G.P.).
11. Reference Center for Rare Arrhythmic Disorders, Cardiologic Department, Nantes University Hospital, France (V.P.).
12. L’institut du thorax, INSERM 1087, Nantes, France (V.P.).
13. Electrophysiology and Heart Modeling Institute, Bordeaux University Hospital, IHU Liryc, University of Bordeaux, Pessac-Bordeaux, France (C.R.-T., F.S.).
14. Children’s Hospital Los Angeles, University of Southern California (M.J.S.).
15. Paediatric Cardiology, University Hospital Bristol, United Kingdom (M.A.W.).