1. Department of Biomedical and Biotechnological Sciences, School of Medicine; University of Catania; Catania Italy
2. Department of Clinical and Experimental Medicine, School of Medicine; University of Catania; Catania Italy
3. Departments of Neurology and Biochemistry and Neuroethics Studies Program, Pellegrino Center for Clinical Bioethics; Georgetown University Medical Center; Washington DC
4. Service of Child Neuropsychiatry, ASP Siracusa, Italy
5. Environmental Health Sciences Division, School of Public Health; University of Massachusetts; Amherst Massachusetts