1. University of Sheffield, Medical School, Sheffield, UK
2. Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, UK
3. Academic Directorate of General Surgery, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
4. Department of Psychology, School of Social Sciences, Leeds Beckett University, Leeds, UK
5. Academic Department of Gastroenterology, University of Sheffield and Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
6. Department of Rheumatology, Sheffield Teaching Hospitals NHS Foundation Trust and Sheffield Children’s Hospitals, Sheffield, UK