1. PhD Program in Social, Occupational and Medico-Legal Sciences, Department of Occupational Medicine, University of Rome Tor Vergata, Viale Oxford 81, 00133 Roma, Italy
2. Department of Occupational Medicine, University of Rome Tor Vergata, Viale Oxford 81, 00133 Roma, Italy
3. PhD Program in Applied Medical Surgical Sciences, Department of Surgical Sciences, University of Rome Tor Vergata, Viale Oxford 81, 00133 Roma, Italy
4. Department of Occupational Medicine, University of Rome La Sapienza, 00185 Roma, Italy
5. Department of Occupational Medicine, University of Chieti “G. D’Annunzio”, 66100 Chieti, Italy