1. School of Immunology and Microbial Sciences, King’s College London, London, UK
2. Department of Gastroenterology, University College London Hospital, UK
3. Gastroenterology Division, Mater Dei Hospital, Msida, Malta
4. Department of Gastroenterology and Hepatology, University Hospital Zürich, Switzerland
5. Translational & Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
6. Department of Gastroenterology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK