1. Department of Cardiology, University Hospitals of North Midlands Heart and Lung Centre Royal Stoke University Hospital Stoke‐on‐Trent UK
2. Keele University Keele UK
3. Department of Cardiology University Hospitals of Coventry and Warwickshire NHS Trust Coventry UK
4. University of Warwick Coventry UK
5. Department of Cardiology Macclesfield District General Hospital Macclesfield UK