1. Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, 33520 Tampere, Finland
2. Faculty of Medicine and Health Technology, Tampere University, 33014 Tampere, Finland
3. Research Unit of Biomedicine, Oulu University, 90220 Oulu, Finland
4. Medical Research Center Oulu, Oulu University, Oulu University Hospital, 90220 Oulu, Finland
5. Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznan, Poland
6. Department of Surgery, Helsinki University Hospital, 00260 Helsinki, Finland
7. Fimlab Laboratories, Department of Clinical Chemistry, 33520 Tampere, Finland
8. Finnish Cardiovascular Research Center, 33520 Tampere, Finland
9. Department of Clinical Physiology, Tampere University Hospital, 33520 Tampere, Finland
10. Centre for Population Health Research, University of Turku and Turku University Hospital, 20521 Turku, Finland
11. Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, 20014 Turku, Finland
12. Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, 20521 Turku, Finland
13. Department of Otorhinolaryngology-Head and Neck Surgery, Helsinki University Hospital, 00260 Helsinki, Finland