1. Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic Alix School of Medicine and the Mayo Clinic Medical Scientist Training Program , Rochester, MN 55905, USA
2. Department of Molecular Pharmacology & Experimental Therapeutics, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic , Rochester, MN 55905, USA
3. Department of Cardiovascular Medicine/Division of Heart Rhythm Services, Windland Smith Rice Genetic Heart Rhythm Clinic, Mayo Clinic , Guggenheim 501, 200 First Street SW, Rochester, MN 55905, USA
4. Department of Pediatric and Adolescent Medicine/Division of Pediatric Cardiology, Mayo Clinic , Rochester, MN 55905, USA