1. The Adult Congenital Heart Disease Center; Children's Hospital of Pittsburgh of UPMC; Pittsburgh; Pa; USA
2. Department of Cardiology; The Columbus Ohio Adult Congenital Heart Program (COACH); Columbus; Ohio; USA
3. Department of Cardiothoracic Surgery; University of Pittsburgh; Pittsburgh; Pa; USA
4. Diagnostic Radiology; Nationwide Children's Hospital; Columbus; Ohio; USA
5. Department of Cardiology; Boston Adult Congenital Heart Program; Boston; Mass; USA