1. Department of Biomedical Sciences; Humanitas University; Milan Italy
2. IBD Center, Department of Gastroenterology; Humanitas Clinical and Research Center; Milan Italy
3. Medical School; University of Cyprus; Nicosia Cyprus
4. Hellenic Center for Disease Control and Prevention; Athens Greece
5. Department of Experimental and Health Sciences; Pompeu Fabra University; Barcelona Spain
6. Barcelona Institute for Global Health; Barcelona Spain
7. Department of Hepato-Gastroenterology and Inserm U954; University Hospital of Nancy, University of Lorraine; Vandoeuvre-lès-Nancy France