1. Population Health Sciences Institute, Newcastle University, UK;The Newcastle upon Tyne Hospitals NHS Foundation Trust, UK
2. The Newcastle upon Tyne Hospitals NHS Foundation Trust, UK; Population Health Sciences Institute, Newcastle University, UK
3. Population Health Sciences Institute, Newcastle University, UK
4. Faculty of Medical Sciences, Newcastle University, UK
5. Faculty of Health and Medical Sciences, The University of Adelaide, Australia; Faculty of Medical Sciences, Newcastle University, UK
6. School of Health Sciences, The University of Liverpool, UK