1. School of Medicine, Dentistry, and Nursing, University of Glasgow Glasgow UK
2. Centre for Trials Research, College of Biomedical and Life Science, Cardiff University Cardiff UK
3. National Institute for Health Research (NIHR) Bristol Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust and University of Bristol Bristol UK
4. Bristol Dental School, University of Bristol Bristol UK
5. Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ) Heidelberg Germany