Johannes Kepler University Linz - Christian Doppler Laboratory for Mucosal Immunology, Johannes Kepler University Linz - Christian Doppler Laboratory for Mucosal Immunology, Medical University of Innsbruck - Department of Hygiene, Microbiology and Public Health, Baxter AG - Global Pathogen Safety, Johannes Kepler University Linz - Department of Internal Medicine 2 (Gastroenterology and Hepatology, Endocrinology and Metabolism, Nephrology, Rheumatology), Johannes Kepler University Linz - Department of Internal Medicine 2 (Gastroenterology and Hepatology, Endocrinology and Metabolism, Nephrology, Rheumatology), Medical University of Innsbruck - VASCage, Research Centre on Vascular Ageing and Stroke, Johannes Kepler University Linz - Department of Internal Medicine 2 (Gastroenterology and Hepatology, Endocrinology and Metabolism, Nephrology, Rheumatology), Johannes Kepler University Linz - Department of Internal Medicine 2 (Gastroenterology and Hepatology, Endocrinology and Metabolism, Nephrology, Rheumatology), Medical University of Innsbruck - Gastroenterology, Hepatology, Endocrinology & Metabolism, Johannes Kepler University Linz - Department of Internal Medicine 2 (Gastroenterology and Hepatology, Endocrinology and Metabolism, Nephrology, Rheumatology), Baxter AG - Global Pathogen Safety, Medical University of Innsbruck - Department of Hygiene, Microbiology and Public Health and Johannes Kepler University Linz - Department of Internal Medicine