1. Division of Medicine, Centre for Rheumatology and Clinical Immunology, University of Turku and Turku University Hospital , Turku, Finland
2. Department of Gastroenterology, Turku University Hospital , Turku, Finland
3. Department of Clinical Physiology, Nuclear Medicine and PET, Turku University Hospital , Turku, Finland
4. Department of Radiology, Turku University Hospital and University of Turku , Turku, Finland