1 Program for Adult Congenital Heart Disease, Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania. Electronic address: wdavidson@pennstatehealth.psu.edu.
2 Department of Cardiology, Boston Children's Hospital, Cardiovascular Division, Brigham and Women's Hospital, and Cardiology Division, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts. Electronic address: https://twitter.com/DrAdaStefanescu.