1. Department of Hygiene and Public Health, Local Health Unit 3 Serenissima, Venice, Italy
2. Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
3. Department of Transational Research on new technologies in medicine and surgery, University of Pisa, Pisa, Italy
4. Hygiene and Public Health Unit, DSCTV, University of Padua, Padua, Italy