1. Department of Gastroenterology, Hepatology and Infectious Diseases; Otto-von-Guericke University; Magdeburg Germany
2. Department of Nephrology, Hypertension, Diabetes and Endocrinology; Otto-von-Guericke University; Magdeburg Germany
3. Institute of Molecular and Clinical Immunology; Otto-von-Guericke University; Magdeburg Germany
4. Institute of Pathology; Otto-von-Guericke University; Magdeburg Germany
5. Gastroenterology Unit; Department of Medicine; University of Parma; Parma Italy