1. Division of Cardiology Department of Pediatrics, Children’s Hospital of Philadelphia and Perelman School of Medicine University of Pennsylvania Philadelphia PA
2. Department of Biostatistics, Epidemiology, and Informatics Perelman School of Medicine University of Pennsylvania Philadelphia PA
3. Department of Obstetrics and Gynecology Perelman School of Medicine University of Pennsylvania Philadelphia PA
4. Center for Fetal Diagnosis and Treatment Children’s Hospital of Philadelphia and Perelman School of Medicine University of Pennsylvania Philadelphia PA
5. Division of Cardiothoracic Surgery Department of Surgery, Children’s Hospital of Philadelphia and Perelman School of Medicine University of Pennsylvania Philadelphia PA
6. Department of Medicine Perelman School of Medicine University of Pennsylvania Philadelphia PA