1. Department of Public Health Sciences and Paediatrics, University of Torino, Torino, Italy
2. Department of Life Sciences and Public Health, Section of Occupational Health, Università Cattolica del Sacro Cuore, Rome, Italy
3. Department of Health Science and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
4. Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy