1. Centre for Trials Research, Heath Park Campus Cardiff University Cardiff UK
2. Population Data Science, Health Data Research UK (HDR UK) Swansea University Swansea UK
3. Population Data Science, Administrative Data Research Wales Swansea University Swansea UK
4. Public Health Wales, Communicable Disease Surveillance Centre Cardiff UK
5. Cardiff Metropolitan University School of Health Sciences Cardiff UK
6. DECIPHer – Centre for Development, Evaluation, Complexity and Implementation in Public Health Improvement Cardiff University Cardiff UK