1. Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy
2. Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
3. District 6, Local Health Authority Roma 2, 00100 Rome, Italy
4. District 4, Local Health Authority Roma 6, 00100 Rome, Italy
5. School of Hygiene and Preventive Medicine, University of Rome Tor Vergata, 00133 Rome, Italy