1. E Floor West Block; Nottingham Digestive Disease Centre; Derby Rd Nottingham UK NG7 2UH
2. University of Nottingham; Division of GI Surgery, School of Clinical Sciences; Queen's Medical Centre Campus Nottingham UK NG7 2UH
3. Nottingham University Hospitals NHS Trust; Department of GI Surgery, School of Clinical Sciences; Nottingham UK
4. University of Nottingham; Department of Epidemiology and Public Health; 188 Alfreton Road Little Eaton Derby UK DE21 5AB
5. Royal Wolverhampton NHS Trust; Gastroenterology Unit; Wolverhampton UK
6. Nottingham University Hospital Queen's Medical Centre; Division of Gastrointestinal Surgery; Derby Road Nottingham UK NG7 2UH