1. Department of Medicine University of Cambridge Cambridge UK
2. Pulmonary Vascular Disease Unit Royal Papworth Hospital NHS Foundation Trust Cambridge UK
3. Department of Cardiothoracic Surgery Royal Papworth Hospital NHS Foundation Trust Cambridge UK
4. Department of Radiology Royal Papworth Hospital Cambridge UK
5. Department of Interventional Cardiology Royal Free Hospital London UK
6. Department of Interventional Cardiology Royal Papworth Hospital NHS Foundation Trust Cambridge UK