1. Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Tampere, Finland;
2. Fimlab Laboratories, Tampere, Finland;
3. Department of Internal Medicine, Tampere University Hospital, Tampere, Finland;
4. Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland;
5. Department of Radiology, Tampere University Hospital, Tampere, Finland