1. University Hospitals Plymouth NHS Trust; Plymouth UK
2. Royal Brompton & Harefield Hospital NHS Foundation Trust; Department of Cardiothoracic Surgery; London UK
3. St Bartholomew's Hospital, Barts Health NHS Trust; Department of Cardiothoracic Surgery; London UK
4. Royal Papworth Hospital; Department of Cardiothoracic Surgery; Papworth Everard UK
5. St Bartholomew’s Hospital, Barts Health NHS Trust; London UK
6. University of Nottingham; School of Health Sciences; Queens Medical Centre Nottingham UK NG7 2HA
7. Public Health England; Healthcare-Associated Infection & Antimicrobial Resistance Division, National Infection Service; London UK
8. Royal Papworth Hospital; Department of Cardiothoracic Surgery; Cambridge UK
9. University of Leicester, Glenfield Hospital; Leicester Clinical Trials Unit; Leicester UK
10. Hull and East Yorkshire Hospitals NHS Trust; Department of Cardiothoracic Surgery; Hull UK
11. University of Leicester; Department of Cardiovascular Sciences; Clinical Sciences Wing Glenfield General Hospital Leicester Leicestershire UK LE3 9QP