1. Department of Biomedical Science and Public Health, Università Politecnica delle Marche, 60126 Ancona, Italy
2. Department of Neurosurgery, Università Politecnica delle Marche, Azienda Ospedali Riuniti, 60126 Ancona, Italy
3. Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
4. Regional Health Agency of the Marche Region, 60122 Ancona, Italy