1. School of Pharmacy, Newcastle University, King George VI Building, Newcastle Upon Tyne, Tyne and Wear NE1 7RU, UK
2. Operating Theatres, Singleton Hospital, Swansea Bay University Health Board, Swansea SA2 8QA, Wales, UK
3. Swansea Medical School, Swansea University, Swansea SA2 8QA , Wales, UK
4. Department of Sociology, Durham University, Durham DH1 1SZ, UK
5. Population Health Sciences Institute, Newcastle University, Baddiley-Clark Building, Richardson Road, Newcastle upon Tyne, Tyne and Wear NE1 7RU, UK
6. Department of Pharmacy, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Rd, High Heaton, Newcastle upon Tyne, Tyne and Wear NE7 7DN, UK