1. General Practice Research Unit Department of Public Health and General Practice Norwegian University of Science and Technology (NTNU) Trondheim Norway
2. Department of Microbiology The Gade Institute Haukeland University Hospital Bergen Norway
3. Department of Clinical Science University of Bergen Bergen Norway
4. Department of Work and Environmental Medicine Hospital of North Norway Tromsø Norway
5. Faculty of Humanities Social Sciences and Education Department of Philosophy UiT – The Arctic University of Norway Tromsø Norway