1. Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism Medical University Innsbruck Innsbruck Austria
2. Department of Interdisciplinary Medicine University of Bari Bari Italy
3. Christian Doppler Laboratory for Mucosal Immunology Medical University Innsbruck Innsbruck Austria
4. Department of Precision Medicine University of Campania “L. Vanvitelli” Naples Italy