1. Centre for Behaviour Change, University College London, London, UK
2. NIHR Health Protection Research Unit in Healthcare Acquired Infection and Antimicrobial Resistance, Imperial College London, Hammersmith Campus, London, UK
3. Centre for Implementation Science, Health Service and Population Research Department, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
4. Department of Health Sciences, University of Leicester, Leicester, UK
5. Division of Population Health Sciences, School of Medicine, University of Dundee, Dundee, Scotland, UK