1. Division of Cardiology The Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
2. Leonard Davis Institute for Healthcare Economics University of Pennsylvania Philadelphia Pennsylvania USA
3. Department of Biomedical and Health Informatics The Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
4. Division of Cardiac, Thoracic, and Vascular Surgery NYP/Morgan Stanley Children's Hospital Columbia University Irving Medical Center Philadelphia Pennsylvania USA
5. Division of Cardiothoracic Surgery The Children's Hospital of Philadelphia Philadelphia Pennsylvania USA