1. Division of Surgery and Interventional Sciences University College London London UK
2. Wellcome/EPSRC Centre for Interventional and Surgical Sciences (WEISS) University College London London UK
3. Department of Gastroenterology University College London Hospital London UK
4. Odin Vision London UK
5. NIHR Nottingham Digestive Diseases Biomedical Research Centre Nottingham UK
6. Clínico San Carlos Madrid Spain
7. UZ Leuven Leuven Belgium
8. St Elisabeth Hospital Vienna Austria