1. National Heart and Lung Institute, Imperial College London London UK
2. National Pulmonary Hypertension Service Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust London UK
3. Adult Congenital Heart Disease Service Royal Brompton Hospital London UK
4. Department of Interstitial Lung Disease Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust London UK
5. Department of Radiology Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust London UK
6. Department of Echocardiography Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust London UK