1. Pulmonary Vascular Disease UnitRoyal Hallamshire HospitalUK
2. Department of CardiologyQueen Elizabeth Hospital BirminghamUK
3. Adult Congenital Heart Centre and Centre for Pulmonary HypertensionRoyal Brompton Hospital and Imperial College LondonUK
4. Department of Congenital Heart DiseaseUniversity Hospitals Bristol NHS Foundation TrustUK