1. St Mark's the National Bowel Hospital London UK
2. Exeter New Hampshire USA
3. Department of Surgery London North West University Healthcare NHS Trust London UK
4. Wolfson Unit for Endoscopy, St Mark's Hospital and Departments of Surgery and Cancer Imperial College London London UK
5. Department of Surgery St Mark's Hospital London UK
6. Florence Nightingale Faculty of Nursing, Midwifery and Palliative Care King's College London London UK