1. School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham, UK
2. School of Sociology and Social Policy, University of Nottingham, University Park, Nottingham, UK
3. Faculty of Engineering, University of Nottingham, University Park, Nottingham, UK
4. Department of Infection Prevention and Control, Nottingham University Hospitals NHS Trust, Queen’s Medical Centre, UK
5. School of Nursing, Physiotherapy, and Midwifery, University of Nottingham, Queen’s Medical Centre, UK
6. Endoscopy Unit, University Hospitals Plymouth NHS Trust, Plymouth, Devon, UK