Affiliation: | 1. Department of Clinical Radiology, Great Ormond Street Hospital, London, UK;2. Department of Clinical Radiology, The Royal Brompton Hospital, London, UK;3. Department of Respiratory Paediatrics, Great Ormond Street Hospital, London, UK;4. National Paediatric Pulmonary Hypertension Service UK, Great Ormond Street Hospital, London, UK;5. Department of Pathology, Great Ormond Street Hospital, London, UK |