1. Adult Congenital Heart Centre and National Centre for Pulmonary Hypertension, Royal Brompton Hospital Part of Guy's and St Thomas’ NHS Foundation Trust , Sydney St, London, SW3 6NP , UK
2. National Heart & Lung Institute, Imperial College London , Exhibition Rd, London, SW7 2BX , UK
3. Adult Congenital Heart Centre, Guy's and St Thomas’ NHS Foundation Trust , London , UK
4. Cardiovascular Imaging Science, King’s College , London , UK