1 From the Division of Pediatric Cardiology, Department of Pediatrics (S.L.P., P.S., J.R.P.) and Cardiovascular Institute (S.L.P., P.S., J.R.P.), Stanford University School of Medicine, Palo Alto, CA; and Harvard Medical School, Boston, MA (P.S.).
2 From the Division of Pediatric Cardiology, Department of Pediatrics (S.L.P., P.S., J.R.P.) and Cardiovascular Institute (S.L.P., P.S., J.R.P.), Stanford University School of Medicine, Palo Alto, CA; and Harvard Medical School, Boston, MA (P.S.). [email protected].