1. Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
2. Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
3. Research Department, Innlandet Hospital Trust, Brumunddal, Norway
4. Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy