Affiliation: | 1. Department of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland;3. Department of Internal Medicine, GZO – Zurich Regional Health Center, Wetzikon, Switzerland;4. Division of Gastroenterology and Hepatology, UNC School of Medicine, Chapel Hill, North Carolina;5. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota;7. Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland;12. Pathology Viollier AG, Basel, Switzerland;8. Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland |