1. Department of Internal Medicine VI; Infectious Diseases; Immunology; Rheumatology; Pneumology; Medical University of Innsbruck; Austria
2. Department of Internal Medicine I; Gastroenterology; Endocrinology and Metabolism; Medical University of Innsbruck; Austria
3. Department of Internal Medicine II; Gastroenterology and Hepatology; Medical University of Innsbruck; Austria
4. Department of Pathology; Medical University of Innsbruck; Austria
5. Biocenter; Division of Clinical Biochemistry; Medical University of Innsbruck; Austria
6. Departments of Laboratory Medicine and Microbiology; University of Washington; Seattle USA