1. Department of Biomedical and Biotechnological Sciences, School of Medicine; University of Catania; Catania Italy
2. Departments of Neurology and Biochemistry and Neuroethics Studies Program; Pellegrino Center for Clinical Bioethics, Georgetown University Medical Center; Washington DC
3. Department of Basic Medical Sciences, Neurosciences and Sense Organs; University of Bari; Bari Italy
4. Department of Medical; Surgical Sciences and Advanced Technologies, University of Catania; Italy
5. Institute of Nutrition Sciences, Justus-Liebig-University of Giessen; Giessen Germany
6. Department of Environmental Health Sciences; University of Massachusetts, Amherst; Amherst Massachusetts