1. Center of Molecular and Genetic Epidemiology, Department of Environmental and Occupational Health, Università degli Studi di Milano and IRCCS Fondazione Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
2. Department of Experimental and Applied Medicine, Occupational Medicine and Industrial Hygiene, University of Brescia, Brescia, Italy
3. Department of Clinical and Biological Sciences, University of Insubria, Varese, Italy
4. Department of Clinical Medicine, Nephrology and Health Sciences, University of Parma Medical School, Parma, Italy
5. Exposure, Epidemiology and Risk Program, Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA