1. Cardiology Department, Liverpool Centre for Cardiovascular Science, Liverpool Heart and Chest Hospital NHS Foundation Trust, Thomas Drive, Liverpool L14 3PE, UK
2. Inspira Health Ltd, Oriel House, 2-8 Oriel Road, Bootle, Liverpool L20 7EP, UK
3. Cardiology Department, Royal Cornwall Hospitals NHS Trust, Treliske, Truro, Cornwall TR1 3LJ, UK
4. Cardiology Department, Nottingham University Hospitals NHS Trust, Hucknall Road, Nottingham NG5 1PB, UK
5. Medtronic Ltd, Building 9, Croxley Park, Hatters Lane, Watford WD18 8WW, UK
6. Cardiology Department, Institute of Cardiovascular Sciences, University of Manchester, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Southmoor Road, Wythenshawe, Manchester M23 9LT, UK