1. Public Health England, Primary Care Unit, Microbiology Department, Gloucester Royal Hospital, Great Western Road, Gloucester GL1 3NN, UK
2. Public Health England, Heart of England NHS Foundation Trust, Public Health Laboratory, Bordesley Green E, Birmingham B9 5SS, UK
3. Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
4. Public Health England, 61 Colindale Avenue, London NW9 5EQ, UK
5. University of Southampton, Aldermoor Health Centre, Aldermoor Close, Southampton SO16 5ST, UK
6. University Hospitals of Coventry & Warwickshire NHS Trust, Midlands & NW Bowel Cancer Screening Hub, Hospital of St Cross, Barby Road, Rugby CV22 5PX, UK