1. Council for Nutritional and Environmental Medicine Mo i Rana Norway
2. Department of Occupational Medicine St. Olav University Hospital Trondheim Norway
3. Department of Public Health and Nursing Norwegian University of Science and Technology Trondheim Norway
4. Razi Vaccine and Serum Research Institute Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
5. Biology Education Centre Uppsala University Uppsala Sweden
6. Research Department Innlandet Hospital Trust Brumunddal Norway
7. Faculty of Health and Social Science Inland Norway University of Applied Sciences Elverum Norway