1. School of Pharmacy, Newcastle University, Newcastle upon Tyne, UK
2. Operating Theatres, Singleton Hospital, Swansea Bay University Health Board, Swansea, UK
3. Swansea Medical School, Swansea University, Swansea, UK
4. Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
5. Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
6. Department of Sociology, Durham University, Durham, UK