1. Cardiovascular Institute, Stanford University (W.R.G., E.A., P.Y., M.P.).
2. Division of Pediatric Cardiology, Department of Pediatrics, Lucille Packard Children’s Hospital (W.R.G., A.T., S.R.C., K.S.M., A.M.D.).
3. Stanford Center for Inherited Cardiovascular Disease (K.D., C.C., M.J., J.W., T.M., J.P., C.R., A.S., E.A., M.P.).
4. Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, CA (E.A., P.Y., M.P.).