| Matthew J Gillespie | Division of Cardiology The Children's Hospital of Philadelphia Philadelphia PA USA. |
| Matthew J Gillespie | Department of Pediatrics Perelman School of Medicine at The University of Pennsylvania Philadelphia PA USA. |
| Jonathan J Rome | Division of Cardiology The Children's Hospital of Philadelphia Philadelphia PA USA. |
| Jonathan J Rome | Department of Pediatrics Perelman School of Medicine at The University of Pennsylvania Philadelphia PA USA. |
| Michael L O'Byrne | Division of Cardiology The Children's Hospital of Philadelphia Philadelphia PA USA. |
| Michael L O'Byrne | Department of Pediatrics Perelman School of Medicine at The University of Pennsylvania Philadelphia PA USA. |
| Michael L O'Byrne | Clinical Futures, The Children's Hospital of Philadelphia and Leonard Davis Institute and Cardiovascular Outcomes, and Evaluative Research Center Perelman School of Medicine at The University of Pennsylvania Philadelphia PA USA. |