1. Occupational & Environmental Epidemiology Section, Cancer Research & Prevention Institute, Florence, Italy
2. Department of Environmental Health Sciences, IRCCS—Istituto di Ricerche Farmacologiche “Mario Negri”, Milan, Italy
3. Department of Statistics, Computer Science, Applications ‘G. Parenti’, University of Florence, Florence, Italy
4. Department of Public Health and Paediatrics, University of Torino, Turin, Italy
5. National Research Council, Institute of Clinical Physiology, Pisa, Italy
6. Italian Ministry of Health, Rome, Italy
7. National Institute of Health (ISS), Rome, Italy
8. Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy