1. Glenfield Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK; Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
2. Glenfield Hospital, University Hospitals of Leicester NHS Trust, Leicester, UK
3. West of Scotland Regional Heart and Lung Centre, Golden Jubilee National Hospital, Glasgow, UK; School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow, UK
4. Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK