1. Department of General Surgery Peterborough City Hospital Peterborough UK
2. Department of General Surgery Watford General Hospital Watford UK
3. Department of General Surgery Broomfield Hospital Broomfield UK
4. Department of General Surgery The Princess Alexandra Hospital Harlow UK
5. Department of General Surgery Queen Elizabeth Hospital King’s Lynn UK
6. Department of General Surgery Ipswich Hospital Ipswich UK
7. Department of General Surgery Lister Hospital Stevenage UK
8. Department of General Surgery Norfolk and Norwich University Hospital NHS Trust Norwich Norfolk UK
9. Department of Medicine Norfolk and Norwich University Hospital NHS Trust Norwich Norfolk UK