Affiliation: | ? Service of Gastroenterology and Hepatology, Department of Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland ‡ Service of Rheumatology, DAL, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland § Institute of Pathology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland |