1. School of Clinical Medicine, University of Cambridge, Cambridge, UK
2. Addenbrooke’s Hospital, Cambridge, UK
3. Department of Trauma and Orthopaedics, Shrewsbury and Telford Trust, The Princess Royal Hospital, Telford, UK
4. Department of Trauma and Orthopaedics, Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, UK
5. Department of Urology, Walsall Manor Hospital, Walsall Healthcare NHS Trust, Walsall, UK
6. Department of Intensive Care, Heartlands Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
7. Department of General Surgery, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
8. Department of Otolaryngology, The Princess Royal Hospital, Telford, UK
9. Hull York Medical School, York, UK