1. European Medicines Agency London United Kingdom
2. Food and Drug Administration Silver Spring MD
3. Pediatric Cardiology Unit Centre Universitaire de Cardiologie et Chirurgie Cardiaque Pédiatrique University Hospitals of Geneva City of Geneva Switzerland
4. Center for Congenital Heart Diseases Department of Pediatric Cardiology Beatrix Children's Hospital University Medical Center Groningen University of Groningen the Netherlands
5. Bayer AG, Pharmaceuticals, Research and Development Wuppertal Germany
6. PH Sweden Göteborg Sweden
7. Heart Institute Children's Hospital Colorado University of Colorado School of Medicine Aurora CO
8. Perelman School of Medicine University of Pennsylvania Philadelphia PA
9. Health Canada Ottawa Ontario Canada
10. Actelion Pharmaceuticals Ltd Allscwil Switzerland
11. Childrens Memorial Health Institute Warsaw Poland
12. Department of Paediatric Cardiology Paediatric Heart Center Lund University and Skåne University Hospital Lund Sweden
13. MSD Lucerne Switzerland
14. Medicines Evaluation Board Utrecht the Netherlands