1. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford OX2 6GG, UK
2. Department of Family Medicine and Population Health, Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium
3. Healthcare Associated Infection Research Group, Leeds Institute of Medical Research, University of Leeds, Leeds LS2 9JT, UK
4. Department of Anaesthesia, Leeds Teaching Hospitals NHS Trust, Leeds LS1 3EX, UK
5. Department of Immunology and Allergy, Leeds Teaching Hospitals NHS Trust, Leeds LS1 3EX, UK
6. School of Healthcare, Faculty of Medicine and Health, University of Leeds, Leeds LS2 9JT, UK
7. Department of Medicines Management and Pharmacy, Leeds Teaching Hospitals NHS Trust, Leeds LS2 7UE, UK
8. Dental Translational and Clinical Research Unit, Faculty of Medicine and Health, University of Leeds, Leeds LS2 9JT, UK
9. National Institute for Health Research (NIHR) Health Protection Research Unit (HPRU) in Healthcare Associated Infections and Antimicrobial Resistance, University of Oxford, Oxford OX2 6GG, UK