1. Department of Vascular Surgery, Russells Hall Hospital, Dudley, UK
2. School of Psychology, University of Leeds, Leeds, UK
3. Department of General Surgery, Queen Elizabeth Hospital, Birmingham, UK
4. Department of Vascular Surgery, New Cross Hospital, Wolverhampton, UK
5. Postgraduate School of Surgery, West Midlands Deanery, UK
6. Worcestershire Health and Care NHS trust, Worcestershire, UK