1. ICON Health Economics and Epidemiology, Abingdon, UK;
2. Medtronic plc, Mounds View, MN, USA;
3. Medtronic International Trading Sàrl, Tolochenaz, Switzerland;
4. Medtronic, Ltd, Watford, UK;
5. Divisions of Infectious Diseases and Cardiovascular Diseases, Mayo Clinic College of Medicine, Rochester, MN, USA;
6. Liverpool Heart and Chest Hospital, Liverpool, UK