Salvatore Chirumbolo1, Geir Bjørklund2. 1. Department of Neurological and Movement Sciences, University of Verona, Verona, Italy; Council for Nutritional and Environmental Medicine (CONEM) Mo i Rana, Norway. Electronic address: salvatore.chirumbolo@univr.it. 2. Department of Neurological and Movement Sciences, University of Verona, Verona, Italy; Council for Nutritional and Environmental Medicine (CONEM) Mo i Rana, Norway.