1. IBD Center, Department of Gastroenterology, Humanitas Clinical and Research Institute, Rozzano, Milan, Italy
2. Department of Biomedical Sciences, Humanitas University, Rozzano, Milan, Italy
3. Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
4. Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
5. Gastroenterology Division, Hospital Beatriz Ângelo, Loures, Portugal
6. Barts Health – Royal London Hospital, London, UK