1. Section of Hygiene, Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore , Rome, Italy
2. Department of Medical and Surgical Sciences, University of Bologna , Bologna, Italy
3. CittadinanzAttiva , Rome, Italy
4. Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS , Rome, Italy