1. Department of Preventive Medicine, Workers Health Promotion Unit, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
2. Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy
3. Laboratory of Clinical Chemistry & Microbiology, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
4. Institute of Clinical Physiology, Italian National Research Council, Pisa, Italy
5. Department of Biomedical, Surgical & Dental Sciences, University of Milan, Milan, Italy