1. Sheffield Pulmonary Vascular Disease Unit Royal Hallamshire Hospital Sheffield UK
2. Department of Infection Immunity and Cardiovascular Disease, University of Sheffield Sheffield UK
3. Department of Adult Congenital Cardiology Glenfield Hospital Leicester UK
4. Department of Adult Congenital Cardiology Queen Elizabeth Hospital Birmingham UK
5. Department of Adult Congenital Cardiology Leeds General Infirmary Leeds UK
6. Department of Academic Radiology University of Sheffield Sheffield UK
7. Department of Adult Congenital Cardiology Manchester Royal Infirmary Manchester UK