1. Department of Nursing; Local Health Authority Roma 4; Civitavecchia Rome Italy
2. Department of Psychology; University of Milan-Bicocca; Milan Italy
3. Department of Biomedicine and Prevention; University of Rome Tor Vergata; Rome Italy
4. National Center of Epidemiology; Surveillance and Health Promotion National Institute of Health; Rome Italy
5. Department of Medicine and Surgery; University of Milan-Bicocca; Milan Italy