1National Pulmonary Hypertension Service, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
2Royal Sussex County Hospital, Brighton, UK
3Royal Hallamshire Hospital, Sheffield, UK
4South Tees Hospitals NHS Trust, Middlesbrough, UK
5Department of Respiratory Medicine, Royal Berkshire Hospital, Reading, UK
6Derby Teaching Hospitals NHS Foundation Trust,
7Chesterfield, UK
8Department of Respiratory Medicine, George Eliot Hospital, Nuneaton, UK
9Emergency Department, Salford Royal NHS Foundation Trust, Salford, UK
10The Royal College of Emergency Medicine, London, UK
11St Thomas’ Hospital, London, UK
12Cardiovascular Department, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
13Women’s health academic centre, Guy’s and Saint Thomas’ NHS Foundation Trust, London, UK
14Department of Respiratory Medicine, Nottingham City Hospital, Nottingham, UK
15King’s College Hospital NHS Foundation Trust, London, UK
16George Eliot Hospital NHS Trust, Nuneaton, UK
17Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
18Haematology, Glasgow Royal Infirmary, Glasgow, UK