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