Council for Nutritional and Environmental Medicine, Toften 24, 8610 Mo i Rana, Norway. Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy. Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, 071400 Semey, Kazakhstan. CONEM Kazakhstan Environmental Health and Safety Research Group, Semey Medical University, 071400 Semey, Kazakhstan. Faculty of Medicine, Ovidius University of Constanta, 900470 Constanta, Romania. Research Department, Innlandet Hospital Trust, 2380 Brumunddal, Norway. Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, 37134 Verona, Italy. CONEM Scientific Secretary, 37134 Verona, Italy. Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj 31975/148, Iran.