1. Department of Health Science and Public Health, Catholic University of the Sacred Heart , Rome , Italy
2. Department of Woman and Child Health and Public Health, Occupational Health Section, Catholic University of the Sacred Heart , Rome , Italy
3. Department of Prevention, U.O.S.T. Interdistrettuale Ambienti di Lavoro Ambito Sud, ASL Salerno , Salerno , Italy
4. Department of Woman and Child Health and Public Health, Public Health Section, Fondazione Policlinico Universitario A. Gemelli IRCCS , Rome , Italy