1. National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital, 5021 Bergen, Norway
2. Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
3. Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
4. National Center for Tropical Infectious Diseases, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
5. Centre for Intervention Science in Maternal and Child Health (CISMAC), Centre of International Health, Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway
6. Department of Biomedicine, University of Bergen, 5020 Bergen, Norway